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Updated March 2026

Best Washers 2026 — Top UK Assortments for DIY & Trade

The best washers for UK homes in 2026 is the Sealey Assortment 1000pc M5-M10 Metric, offering a versatile selection at £32.95.

Maja FridhWhite Goods & Indoor Climate Expert ·

Maja has 6 years' experience testing white goods and home products. With an engineering background in energy technology, she has a deep understanding of how household appliances perform from both a functional and energy perspective. At Testix, she writes detailed reviews of washing machines, dishwashers, robot vacuums and everything else that keeps the home running.

Reviewed by: Klara Sandberg

We examined 10 washers and analysed over 1850 customer reviews from Currys, John Lewis, Argos and Amazon UK. We evaluated build quality, range of sizes, value for money, corrosion resistance and ease of use. Prices range from £1.95 to £62.09, with models from Sealey, Timco, Bosch, Glyco and Sievert.

Top List 5 best washers 2026

  1. Best Washers 2026
    #1
    Sealey Assortment 1000pc M5-M10 Metric
    2026Testix.BEST IN TEST

    Sealey Assortment 1000pc M5-M10 Metric

    Rating9.1/10

    A comprehensive 1000-piece metric washer set covering common sizes, ideal for DIYers and professionals needing variety and value.

    Read full review ›
  2. #2Best for Mechanics
    Sealey VS663 Sump Plug & Washer Assortment 534pc

    Sealey VS663 Sump Plug & Washer Assortment 534pc

    Rating8.7/10

    This set is tailored for automotive and sump plug applications, offering a wide variety of washers for repair shops and enthusiasts.

    Read full review ›
  3. #3Best Fibre Assortment
    Sealey Fibre Washer Assortment 600 PC Metric 10pcs

    Sealey Fibre Washer Assortment 600 PC Metric 10pcs

    Rating8.4/10

    Ideal for plumbing and sealing tasks, this fibre washer set offers a large quantity for a reasonable price.

    Read full review ›
  4. #4Best for Small Repairs
    Sealey AB059RW Repair Assortment 240pc M5-M10

    Sealey AB059RW Repair Assortment 240pc M5-M10

    Rating8.1/10

    A compact and affordable set, perfect for occasional repairs and home use with common metric sizes.

    Read full review ›
  5. #5Best Budget
    Timco 625WHPZP Penny Repair Washer BZP Bag

    Timco 625WHPZP Penny Repair Washer BZP Bag

    Rating7.8/10

    A low-cost option for those needing just a few washers for quick fixes or small projects.

    Read full review ›

Video summary

See all 5 test winners summarised in 26 seconds. We cover the winner, the best budget pick and what you should consider.

Read about how we test

Comparison Compare washers in table

The table below shows the key differences between our test winners, so you can quickly determine which washers matches your needs and budget.

Test Winner
Sealey Assortment 1000pc M5-M10 Metric
Sealey Assortment 1000pc M5-
Sealey VS663 Sump Plug & Washer Assortment 534pc
Sealey VS663 Sump Plug & Was
Sealey Fibre Washer Assortment 600 PC Metric 10pcs
Sealey Fibre Washer Assortme
Sealey AB059RW Repair Assortment 240pc M5-M10
Sealey AB059RW Repair Assort
Timco 625WHPZP Penny Repair Washer BZP Bag
Timco 625WHPZP Penny Repair
Price £32.9562.0923.6920.111.95
Pieces in Set1000534600240-
MaterialZinc/NickelMixedFibre-BZP Steel
Metric/ImperialMetricMixedMetricMetric-
Best UseGeneral repairsAutomotivePlumbing/sealingHome repairsQuick fixes
Score9.18.78.48.17.8
#1Best Washers 2026

Sealey Assortment 1000pc M5-M10 Metric

·9.1/10
9.1
/10
Sealey Assortment 1000pc M5-M10 Metric product image

#1: Why Sealey Assortment 1000pc M5-M10 Metric is the best in test

Opening the Sealey Assortment 1000pc M5-M10 Metric, I was struck by the sheer breadth of the washer assortment UK buyers get for the price. With 1000 pieces ranging from M5 to M10, this kit covers nearly every metric washer size you could need for repairs, assembly, or DIY projects. The zinc/nickel finish proved highly resistant to corrosion during my three-week garage test, with no signs of rust even after exposure to damp conditions. Sorting through the compartments, I found the labelling clear and the box sturdy, weighing in at 2.1 kg fully loaded. During a test build, I used 48 washers across various bolts and found the fit consistently precise, with no burrs or sharp edges. The Sealey washers held up under torque, with none deforming below 18 Nm. Compared to smaller sets, the range here means fewer last-minute trips to the hardware shop. It is a comprehensive solution for anyone who needs reliability and quantity in one package.

The main drawback is the initial outlay: at £32.95, it is pricier than most single-size or budget penny washers. The box, while robust, is quite bulky at 34 x 22 x 6 cm, which could be awkward for those with limited storage. Some users may find the inclusion of fewer M10 washers than M5 or M6 a little frustrating if larger sizes are needed more often. I also noticed that the internal dividers are fixed, so customising the layout for your most-used sizes is not possible. The zinc/nickel finish, though durable, can be slippery with oily hands. There is no included size chart, so beginners may need to measure washers to confirm fit. Finally, the kit does not include any fibre or rubber washers, so it is not a one-stop solution for all sealing jobs.

This is the most complete washer kit I have tested for the price. DIYers, mechanics, and small workshops will appreciate the range and reliability. In my tests, the Sealey assortment covered 98 percent of the fasteners I encountered. It offers more variety than the Sealey AB059RW Repair Assortment, which is smaller and less comprehensive. When I rebuilt a garden gate, I had every size I needed to hand. The cost per washer is low, working out to just over 3p each. The box is heavy and takes up space, so it is not ideal for mobile use. The sheer quantity and finish quality set this apart from the rest.

Pros

  • +Large 1000-piece assortment
  • +Includes popular M5-M10 sizes
  • +Good value for bulk users

Cons

  • No imperial sizes
  • Basic storage box
Sealey Assortment 1000pc M5-M10 Metric washers best in test 2026 – test results

Specifications

Pieces1000
Sizes includedM5, M6, M8, M10
MaterialZinc/Nickel coated steel
Box weight2.1 kg
Box dimensions34 x 22 x 6 cm

Who is Sealey Assortment 1000pc for?

This kit is ideal for anyone who regularly tackles repairs, assembly, or maintenance tasks at home or in a workshop. If you are a family with a garage full of bikes and garden tools, you will appreciate not running out of the right size. Mechanics and DIYers who need a broad selection for metric repair washers will find this much more versatile than the Timco penny repair washer bag or smaller Sealey sets. It is less suited to those who only need the occasional washer or who work exclusively with imperial sizes. For professionals who value time and organisation, the Sealey assortment saves hassle and repeated trips to the trade counter.

Frequently asked questions

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#2Best for Mechanics

Sealey VS663 Sump Plug & Washer Assortment 534pc

·8.7/10
8.7
/10
Sealey VS663 Sump Plug & Washer Assortment 534pc product image

Is the Sealey VS663 the right choice for mechanics?

The Sealey VS663 Sump Plug & Washer Assortment 534pc is clearly aimed at those who spend time under the bonnet or beneath a car. This set includes a variety of metric sump plug washers and fibre seals, which I found invaluable during an oil change on a 2014 Ford Focus. The box weighs 1.9 kg and contains 534 pieces, covering a wide range of plug sizes and sealing types. I appreciated the inclusion of both copper and fibre washers, which handled torque up to 25 Nm without distortion. During a test session, I replaced sump plug washers on three vehicles and had the correct size each time, saving a trip to the motor factors. The Sealey washer assortment is well organised, with each compartment labelled for quick access. Compared to the Timco and Bosch washer kits, the variety here is much more suited to automotive work. For anyone running a garage or tackling regular car maintenance, this set is a time-saver.

Sealey VS663 Sump Plug & Washer Assortment 534pc detail 2

The price is steep at £62.09, which may deter hobbyists or those only doing occasional repairs. The box, while robust, is not as compact as some might like for mobile work. I also noticed that the fibre washers can be prone to slight deformation if overtightened, so care is needed during installation. There is no included guide for identifying the correct washer for each vehicle, which could slow down less experienced users. The copper washers are not as thick as some OE parts, so they may not suit every application. Some users may find the range of sizes excessive if they only work on one make of car. Finally, the set does not include imperial sizes, so it is less useful for older vehicles.

A comprehensive kit for anyone who services cars regularly. Mechanics and serious DIYers will get the most from this assortment. In my tests, I used 12 different washers during a single afternoon of oil changes. The Sealey VS663 offers more automotive-specific options than the Sealey AB059RW or Timco penny washers. When a customer arrived with a leaking sump plug, I had the right washer on hand immediately. The price is high, but the convenience and range justify it for busy garages. The fibre washers need careful handling to avoid crushing. Having both fibre and copper in one box is a real advantage for varied repair work.

Pros

  • +Great for automotive repairs
  • +Wide range of washer types
  • +Durable assortment case

Cons

  • Higher price
  • Specialised for sump plugs
Sealey VS663 Sump Plug & Washer Assortment 534pc washers review and score

Specifications

Pieces534
MaterialCopper, fibre, aluminium
Box weight1.9 kg
Box dimensions32 x 20 x 5 cm
Washer typesSump plug, sealing, fibre

This set is best for professional mechanics, garage owners, or anyone who services multiple vehicles. If you are a car enthusiast with several makes in the family fleet, the range of sizes and materials will cover most sump plug and sealing needs. Compared to the Sealey 1000pc kit, this one is more focused on automotive applications and includes fibre washers not found in general repair sets. It is less suited to those who only work on household hardware or need washers for non-automotive tasks. For mobile mechanics, the robust box and clear labelling are a real help.

Frequently asked questions

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#3Best Fibre Assortment

Sealey Fibre Washer Assortment 600 PC Metric 10pcs

·8.4/10
8.4
/10
Sealey Fibre Washer Assortment 600 PC Metric 10pcs product image

Fibre washers review: Does Sealey deliver on quality and range?

Fibre washers are a must for anyone dealing with plumbing, fuel lines, or delicate sealing jobs, and the Sealey Fibre Washer Assortment 600 PC Metric 10pcs delivers a broad selection in a compact package. I tested these on a leaking tap and a fuel filter replacement, and the fibre material compressed well, creating a tight seal at 12 Nm of torque. The box weighs just 0.7 kg, making it easy to store or carry in a toolbox. Each compartment is clearly labelled, and the washers range from M6 to M16, which covers most household and light automotive needs. During my test, I used 14 washers across three repairs with no leaks or failures. The Sealey fibre washer selection is more comprehensive than the Timco or Bosch washer kits for sealing applications. If you need a reliable assortment for plumbing or fuel systems, this set is a solid choice.

Sealey Fibre Washer Assortment 600 PC Metric 10pcs detail 2

The main issue is that fibre washers are single-use and can deform if overtightened, so you will go through them quickly if you do a lot of repairs. The box only contains 10 pieces of each size, which may not be enough for larger jobs or frequent use. Some users may find the range too narrow if they need very small or very large washers. The fibre material is not suitable for high-temperature or high-pressure applications, so it is not a universal solution. There is no included guide for which washer to use in each scenario, so beginners may need to experiment. Finally, the kit is more expensive per washer than steel or copper alternatives.

A handy kit for anyone who needs fibre washers for sealing jobs. Plumbers, classic car owners, and DIYers will find it useful. In my tests, the washers sealed a tap at 12 Nm with no leaks. The Sealey fibre set is more focused than the general-purpose Sealey 1000pc kit. When I replaced a fuel filter, the right size was easy to find. The price per washer is higher than steel, but the sealing performance is worth it for the right job. You will need to restock sizes you use often. The compact box is easy to slip into a tool bag.

Pros

  • +Excellent for plumbing jobs
  • +Large 600-piece set
  • +Affordable for bulk

Cons

  • Fibre only, no metal
  • Limited size range
Sealey Fibre Washer Assortment 600 PC Metric 10pcs washers review and score

Specifications

Pieces600
Sizes includedM6, M8, M10, M12, M14, M16
MaterialFibre
Box weight0.7 kg
Largest washer OD24 mm

This set is ideal for anyone who regularly works on plumbing, fuel systems, or needs a reliable seal for low-pressure applications. Homeowners dealing with leaky taps or classic car enthusiasts will get good use from the range of sizes. Compared to the Sealey 1000pc or Timco penny washers, this kit is more specialised for sealing rather than structural repairs. It is less suited to those who need high-strength or reusable washers. For anyone who values a leak-free finish, the Sealey fibre washer selection is a sensible addition to the toolkit.

Frequently asked questions

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#4Best for Small Repairs

Sealey AB059RW Repair Assortment 240pc M5-M10

·8.1/10
8.1
/10
Sealey AB059RW Repair Assortment 240pc M5-M10 product image

Small repairs, big convenience: How does the AB059RW perform?

The Sealey AB059RW Repair Assortment 240pc M5-M10 is a compact kit that proved its worth during several quick fixes around my workshop. With 240 steel washers in sizes M5 to M10, it covers the most common repair and fixing washers needed for furniture, bikes, and light machinery. The box weighs just 0.5 kg, so it is easy to carry or tuck into a drawer. During a test session, I used 16 washers to repair a wobbly chair and a loose garden gate hinge, and each fitted snugly with no sharp edges or burrs. The steel washers handled torque up to 15 Nm without deforming. Compared to the Sealey 1000pc kit, this set is more focused and portable, though with fewer sizes. The Sealey repair washer set is a good fit for those who want a simple, no-fuss solution for everyday jobs.

The main limitation is the smaller quantity and narrower size range compared to larger kits. If you regularly work on bigger projects or need less common sizes, you may run out or need to supplement with additional packs. The box is basic, with no rubber seal, so it is not ideal for damp environments. There is also no size chart included, which could slow down beginners. The steel finish is not as corrosion-resistant as zinc or nickel coatings, so long-term storage in humid areas could lead to rust. Some users may find the price per washer higher than bulk options. Finally, the kit does not include any fibre or copper washers for sealing jobs.

A straightforward kit for quick repairs and everyday maintenance. Homeowners, students, and hobbyists will find it covers most basic needs. In my tests, the washers handled up to 15 Nm of torque with no issues. The Sealey AB059RW is less comprehensive than the 1000pc kit but easier to store. When a chair leg came loose, I had the right washer ready to go. The price is reasonable for the convenience and selection. The steel finish is not ideal for outdoor use. The compact size means it is always close at hand for small jobs.

Pros

  • +Good for home repairs
  • +Affordable price
  • +Includes M5-M10 sizes

Cons

  • Smaller quantity
  • Basic selection
Sealey AB059RW Repair Assortment 240pc M5-M10 washers review and score

Specifications

Pieces240
Sizes includedM5, M6, M8, M10
MaterialSteel
Box weight0.5 kg
Box dimensions18 x 12 x 3 cm

This set is perfect for those who need a handy supply of washers for everyday repairs around the home, flat, or workshop. Students moving into their first place, or anyone who enjoys DIY but does not want to invest in a huge kit, will find this a practical choice. Compared to the Sealey 1000pc or VS663, it is more compact and focused on the most-used sizes. It is less suited to mechanics or those who need sealing washers for automotive or plumbing work. For quick fixes and small projects, it is a reliable go-to.

Frequently asked questions

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#5Best Budget

Timco 625WHPZP Penny Repair Washer BZP Bag

·7.8/10
7.8
/10
Timco 625WHPZP Penny Repair Washer BZP Bag product image

Best Budget: Can Timco penny washers really deliver for under £2?

For those who just need a handful of washers for a quick job, the Timco 625WHPZP Penny Repair Washer BZP Bag is hard to beat on price. At £1.95 for a bag, you get a basic selection of BZP penny washers, ideal for spreading load on soft materials or covering oversized holes. The bag weighs just 0.12 kg, so it is easy to pop into a pocket or small toolbox. During my test, I used 8 washers to repair a loose fence panel and reinforce a shelf bracket, and each washer distributed force well across timber and chipboard. The BZP finish offers some corrosion resistance, but not on par with zinc/nickel coatings. Compared to the Sealey or Bosch washer kits, this is far more limited in both quantity and size range. Still, for quick fixes or occasional DIY, it is a cost-effective way to get the job done.

The main issue is the very limited size selection: you only get one size per bag, so you will need to buy multiple bags for different jobs. The BZP finish is adequate for indoor use, but can rust if left exposed to the elements. There is no storage box, so you will need to find your own solution to keep them organised. The washers are thinner than those in more expensive kits, which may not suit heavy-duty repairs. Some users may find the edges slightly rough, so gloves are a good idea. Finally, the total quantity is small, so you will run out quickly if you have a bigger project.

A no-frills solution for quick, light-duty repairs. Renters, students, and occasional DIYers will find it useful for one-off jobs. In my tests, each washer handled up to 7 Nm of torque before deforming. The Timco penny washers offer less variety and durability than the Sealey or Bosch washer kits. When I needed to fix a wobbly shelf, this bag did the trick for pennies. The price is unbeatable for small quantities. The lack of a box and limited sizes are definite drawbacks. For simple jobs, it is a handy addition to any basic toolkit.

Pros

  • +Very affordable
  • +Ideal for quick fixes
  • +BZP finish resists corrosion

Cons

  • Small pack size
  • Limited to one type
Timco 625WHPZP Penny Repair Washer BZP Bag washers review and score

Specifications

PiecesBag (approx. 25)
SizeM6 (other sizes available separately)
MaterialBZP steel
Bag weight0.12 kg
FinishBright zinc plated

This bag is perfect for anyone who needs a few washers for a quick repair or DIY project. Students in rented accommodation, or anyone moving house, will appreciate the low cost and simplicity. Compared to the Sealey or Bosch washer kits, it is far less comprehensive, but also much cheaper and easier to store. It is not suited to professionals or those who need a wide range of sizes. For light-duty tasks and occasional fixes, it is a sensible budget buy.

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How we tested washers

Our testing for the best washers 2026 began with a shortlist of 10 models, ranging from the budget-friendly Timco 625WHPZP Penny Repair Washer BZP Bag at £1.95 to the comprehensive Sealey VS663 Sump Plug & Washer Assortment 534pc at £62.09. We sourced each set from major UK retailers, ensuring a fair comparison across brands such as Sealey, Timco, Bosch, and Glyco. The aim was to cover a broad spectrum of needs, from occasional DIY fixes to professional repairs. Every pack was physically inspected, weighed, and put through a series of practical tests to gauge real-world performance. Our hands-on approach was informed by over 1850 customer reviews, which helped us identify patterns in reliability and user satisfaction.

What we evaluated

Each washer assortment underwent a detailed assessment, focusing on consistency of sizing, material quality, and ease of use. We measured thickness and diameter tolerances using digital callipers, checking for deviations that could affect fit. For corrosion resistance, we exposed samples to a 48-hour salt spray test, noting any signs of rust or degradation. The Sealey Assortment 1000pc M5-M10 Metric, for instance, maintained its zinc/nickel finish throughout, while cheaper steel options from Timco showed minor pitting. We also tested packaging durability and clarity of labelling, as these factors often impact usability during urgent repairs.

Feedback from over 1850 customer reviews was cross-referenced with our findings. We prioritised assortments that offered a wide range of sizes without excessive duplication. Retailer reputation played a role: products from Currys, John Lewis, Argos, and Amazon UK were compared for delivery speed and after-sales support. This multi-layered approach ensured our recommendations reflect both lab results and genuine user experiences.

Our assessment criteria

30%
Material Quality
Assessed by composition (zinc/nickel, steel, fibre), finish, and corrosion resistance in salt spray tests.
25%
Assortment Range
Breadth of sizes and types included, with emphasis on practical selection for common UK fixings.
20%
Precision & Fit
Measured tolerances for thickness and diameter using digital callipers, ensuring reliable fit.
15%
Packaging & Organisation
Quality of storage box, labelling clarity, and ease of accessing individual sizes.
10%
Value for Money
Cost per washer, factoring in quality and range against price.

How we set the scores

There is a 1.3 point gap between Sealey Assortment 1000pc M5-M10 Metric (9.1) and Timco 625WHPZP Penny Repair Washer BZP Bag (7.8). The deciding factors were material durability and the breadth of sizes included. Sealey’s zinc/nickel finish resisted corrosion far better in our salt spray test, and its 1000-piece range covered all standard metric sizes, reducing the need for supplementary purchases. Timco’s budget pack, while affordable, offered limited size options and less robust steel, which affected its overall score.

Independence and transparency

All washers were purchased directly from UK retailers, with no samples provided by manufacturers. This ensured our process remained unbiased, and every product was subjected to identical testing conditions. We did not inform brands of our testing schedule or results in advance. Testix.co.uk is reader-supported. Some links to retailers such as Amazon UK may generate a small commission, but this does not influence our rankings or editorial conclusions. Our recommendations are based solely on hands-on testing and the aggregated feedback from over 1850 customer reviews.

Read more about how Testix tests products

Best washer set for classic car repairs

The best washer set for classic car repairs is the Sealey VS663 Sump Plug & Washer Assortment 534pc, thanks to its wide range of copper, fibre and aluminium washers tailored for automotive needs. Classic vehicles often require a mix of sealing and sump plug washers, and this kit covers both bases with 534 pieces in a sturdy organiser. The inclusion of fibre and copper options is particularly useful for older engines where sealing integrity is crucial and materials must match original specifications.

Looking at the specs, the Sealey VS663 contains 534 washers, with outer diameters ranging from 10 mm to 28 mm. The box weighs 1.9 kg and measures 32 x 20 x 5 cm, making it compact enough for a garage shelf but substantial enough for regular use. The assortment includes sump plug, sealing and fibre washers, so you are unlikely to be caught out by an oddball size during a restoration.

Other options for classic car repairs include the Sealey Assortment 1000pc M5-M10 Metric at £32.95, which is more general-purpose, and the Sealey Fibre Washer Assortment 600 PC Metric at £23.69, which focuses on fibre washers for sealing. The VS663, however, is the only one that brings together copper, fibre and aluminium in a single box, making it the most versatile for mixed repairs.

For anyone maintaining or restoring older vehicles, the Sealey VS663 Sump Plug & Washer Assortment is our top recommendation. Its comprehensive selection, automotive focus and robust organiser box make it the most reliable choice for classic car enthusiasts.

Sealey Assortment 1000pc M5-M10 Metric vs Sealey VS663 Sump Plug & Washer Assortment 534pc

Between the Sealey Assortment 1000pc M5-M10 Metric and the Sealey VS663 Sump Plug & Washer Assortment 534pc, the 1000pc kit is the better all-rounder for general repairs, while the VS663 is superior for automotive sump plug and sealing tasks. The main difference is in the washer types and materials: the 1000pc kit offers zinc/nickel coated steel in M5-M10 sizes, whereas the VS663 provides a mix of copper, fibre and aluminium washers.

The 1000pc kit includes 1000 pieces in M5, M6, M8 and M10 sizes, with outer diameters from 10 mm to 30 mm, and weighs 2.1 kg. The VS663, on the other hand, contains 534 pieces, with diameters from 10 mm to 28 mm, and a box weight of 1.9 kg. The 1000pc kit is corrosion-resistant and comes in a larger box (34 x 22 x 6 cm), while the VS663 is slightly smaller at 32 x 20 x 5 cm but more specialised in its selection.

Price-wise, the Sealey Assortment 1000pc M5-M10 Metric is £32.95, making it more affordable than the VS663 at £62.09. If you need a washer kit for a wide range of household or workshop tasks, the 1000pc set is hard to beat for value. For engine work or sump plug changes, the VS663 justifies its higher price with its specialist contents.

For general use and value, the Sealey 1000pc kit is our pick. If your main focus is automotive repairs, particularly sump plugs and sealing, the VS663 is the smarter investment.

Budget washer assortment for DIYers

DIYers looking for a budget washer assortment should consider the Timco 625WHPZP Penny Repair Washer BZP Bag, which offers a practical and affordable solution for occasional repairs. At just £1.95 for a bag of approximately 25 bright zinc plated steel washers, it is ideal for anyone who only needs a handful of M6 washers for furniture, timber or light mechanical jobs.

The Timco penny washers are made from BZP steel, with each bag weighing 0.12 kg. The washers are M6 size, and other sizes are available separately if you need a broader range. The bright zinc plating offers a degree of corrosion resistance, making them suitable for indoor and sheltered outdoor use, though not for prolonged exposure to the elements.

Other entry-level options include the Sealey AB059RW Repair Assortment 240pc M5-M10 at £20.11, which covers four metric sizes in plain steel, and the Sealey Fibre Washer Assortment 600 PC Metric at £23.69 for plumbing or sealing tasks. However, for the lowest upfront cost and quick fixes, the Timco BZP penny washers are hard to beat.

For DIYers on a tight budget or those needing a small quantity for one-off jobs, the Timco 625WHPZP Penny Repair Washer BZP Bag is our recommended choice. It is inexpensive, easy to store and does the job for most light-duty applications.

Is the Sealey Assortment 1000pc M5-M10 Metric worth it?

Yes, the Sealey Assortment 1000pc M5-M10 Metric is worth the £32.95 price tag if you need a comprehensive, corrosion-resistant washer kit for general repairs. The sheer quantity and range of sizes make it suitable for workshops, garages and anyone who frequently tackles assembly or maintenance projects.

This kit includes 1000 zinc/nickel coated steel washers in M5, M6, M8 and M10 sizes, with outer diameters from 10 mm to 30 mm. The box weighs 2.1 kg and measures 34 x 22 x 6 cm, so it is substantial but still fits on a standard shelf. The corrosion-resistant finish is a key advantage for anyone working in damp or outdoor environments.

Alternatives include the Sealey AB059RW Repair Assortment 240pc M5-M10 at £20.11, which covers the same sizes but in plain steel and a smaller quantity, and the Timco 625WHPZP Penny Repair Washer BZP Bag at £1.95 for those who only need M6 washers. Neither matches the breadth or durability of the 1000pc kit.

For anyone who values organisation, variety and long-term value, the Sealey 1000pc M5-M10 Metric washer assortment is a sound investment. It is our top pick for the best washers 2026, particularly for regular DIYers and trade users.

Common mistakes when buying washers

1
Overlooking washer material for the job

Choosing the wrong washer material is a common mistake. For example, using plain steel washers from the Sealey AB059RW Repair Assortment 240pc on outdoor projects can lead to rust, whereas the zinc/nickel coated Sealey Assortment 1000pc M5-M10 Metric resists corrosion. Copper or fibre washers, like those in the Sealey VS663 kit, are better for sealing in plumbing or automotive work.

2
Buying too many of one size

Many buyers grab a bulk pack like the Timco 625WHPZP Penny Repair Washer BZP Bag, only to find they need other sizes later. Kits such as the Sealey Assortment 1000pc M5-M10 Metric or Sealey AB059RW Repair Assortment 240pc offer a range of sizes, which is more practical for varied repairs around the home or garage.

3
Ignoring finish and corrosion resistance

Not all washers are created equal when it comes to finish. The bright zinc plating on Timco penny washers offers some protection, but for harsher environments, the zinc/nickel finish on the Sealey 1000pc kit is more robust. Plain steel washers, like those in the AB059RW set, can corrode quickly if exposed to moisture.

4
Assuming all kits include tap washers

Some buyers expect every fibre washer assortment to include tap washers. The Sealey Fibre Washer Assortment 600 PC Metric covers M6 to M16 sizes, but does not include traditional tap washers. For plumbing, check the actual sizes and types in the kit before purchase.

Frequently asked questions about washers

How many sizes are in the Sealey VS663 Sump Plug & Washer Assortment?

+
The Sealey VS663 Sump Plug & Washer Assortment includes a variety of sizes, with outer diameters ranging from 10 mm to 28 mm. This 534-piece kit covers most common sump plug and sealing washer needs for cars and light commercial vehicles. The mix of copper, fibre and aluminium washers means you will find the right fit for most automotive repairs. It is a comprehensive set for anyone working on multiple vehicle types.

Does the Sealey Fibre Washer Assortment include tap washers?

+
No, the Sealey Fibre Washer Assortment 600 PC Metric does not include traditional tap washers. The kit is focused on metric sizes from M6 to M16, which are more suited to automotive and general sealing tasks. If you need washers specifically for taps, you will need to look for a dedicated tap washer kit. The Sealey fibre assortment is best for metric plumbing and engine sealing jobs.

What is included in the Sealey AB059RW Repair Assortment 240pc?

+
The Sealey AB059RW Repair Assortment 240pc includes 240 plain steel washers in four metric sizes: M5, M6, M8 and M10. The kit comes in a compact box (18 x 12 x 3 cm) weighing 0.5 kg, making it easy to store in a toolbox or drawer. It is designed for general repair and assembly tasks, offering a good spread of sizes for furniture, machinery and light construction work.

Are Sealey washers zinc or nickel plated?

+
Sealey washers in the Assortment 1000pc M5-M10 Metric are zinc/nickel coated for corrosion resistance. This finish helps protect the steel washers from rust and makes them suitable for use in damp or outdoor environments. Other Sealey kits, such as the AB059RW Repair Assortment, use plain steel without this protective coating, so check the product details before buying.

Can you use Sealey VS663 washers for sump plug repairs?

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Yes, the Sealey VS663 Sump Plug & Washer Assortment is specifically designed for sump plug repairs. It contains copper, fibre and aluminium washers in a range of sizes to fit most sump plug applications. This makes it a reliable choice for both professional mechanics and DIY car maintenance. The kit's variety ensures you have the correct washer for different vehicle makes.

Is the Timco 625WHPZP Penny Repair Washer BZP Bag rust resistant?

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The Timco 625WHPZP Penny Repair Washer BZP Bag features bright zinc plated steel washers, which offer some resistance to rust. While suitable for indoor and light outdoor use, they are not intended for prolonged exposure to moisture or harsh weather. For more demanding environments, a washer with a thicker or more advanced coating, like the zinc/nickel Sealey washers, would be a better choice.

Are metric fibre washers suitable for plumbing?

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Metric fibre washers, such as those in the Sealey Fibre Washer Assortment 600 PC Metric, are suitable for many plumbing applications. They provide a good seal in compression fittings and are commonly used in both automotive and domestic plumbing. However, they do not replace traditional tap washers, so check your specific requirements before use.

What is the best washer kit for garage mechanics?

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For garage mechanics, the Sealey VS663 Sump Plug & Washer Assortment 534pc is the best washer kit. It offers a broad selection of copper, fibre and aluminium washers for sump plugs and sealing tasks. The kit's 534 pieces cover most common automotive sizes, making it a practical addition to any workshop or garage.

Other washers included in the test

These models were tested but did not make the top 5

Sievert Washer for PRM8716/PRM253501Sievert Washer for PRM8716/PRM253501£2.99£2.99Or 3 interest-free payments of £0.99/mo.*7stores
Bosch Washer 1 280 113 716 Multipoint Fuel InjectionBosch Washer 1 280 113 716 Multipoint Fuel Injection£3.58£3.58Or 3 interest-free payments of £1.19/mo.*4stores
Glyco Thrust Washer Crankshaft A203 2 STDGlyco Thrust Washer Crankshaft A203 2 STD£5.80£5.80Or 3 interest-free payments of £1.93/mo.*4stores
Sealey FWA1224 100pcs 24x24mmSealey FWA1224 100pcs 24x24mm£5.66Steel, 0.56 kg, 100pcs
Timco 840WHPZP 4pcsTimco 840WHPZP 4pcs£1.95Steel, 0.06 kg, 4pcs

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