RS PRO Bright Zinc Plated Steel Mudguard Washers, M6

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Bulk discount available

Subtotal (1 bag of 100 units)*

£5.38

(exc. VAT)

£6.46

(inc. VAT)

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In Stock
  • 730 unit(s) ready to ship
  • Plus 114 unit(s) ready to ship from another location
  • Plus 810 unit(s) shipping from 12 November 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Bag(s)
Per Bag
Per unit*
1 - 4£5.38£0.054
5 - 9£5.11£0.051
10 - 29£4.85£0.049
30 +£4.53£0.045

*price indicative

RS Stock No.:
666-7766
Distrelec Article No.:
304-17-659
Brand:
RS PRO
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Brand

RS PRO

For Screw/Bolt Size

M6

Washer Type

Mudguard

Inside Diameter

6.40mm

Outside Diameter

25.0mm

Material

Steel

Finish

Bright Zinc Plated

Thickness

1.50mm

COO (Country of Origin):
CN

RS PRO Mild Steel Mudguard Washers


From the trusted RS PRO Brand, these zinc plated mild steel mudguard washers are generally used with a machine threaded fastener and nut to spread the load over a greater surface area when tightening a bolt, screw or nut. Their larger diameter means they are more suitable for use with worn thread holes than standard washers. As they are bright zinc plated they have an element of corrosion resistance and are suitable for use in many environments. They are supplied in bags of 100.

Available in the following sizes:


• 666-7753 is an M5x20 BZP Steel Mudguard Washer
• 666-7757 is an M5x25 BZP Steel Mudguard Washer
• 666-7766 is an M6x25 BZP Steel Mudguard Washer
• 666-7769 is an M6x30 BZP Steel Mudguard Washer
• 666-7763 is an M6x40 BZP Steel Mudguard Washer
• 666-7772 is an M8x25 BZP Steel Mudguard Washer
• 666-7775 is an M8x30 BZP Steel Mudguard Washer
• 666-7779 is an M8x40 BZP Steel Mudguard Washer
• 666-7788 is an M10x30 BZP Steel Mudguard Washer
• 666-7781 is an M10x40 BZP Steel Mudguard Washer
• 666-7785 is an M10x50 BZP Steel Mudguard Washer

How do they work?


RS PRO washers are an essential part of any fastener assembly, as they serve to incorporate spacing and distribute load when placed between a nut and bolts. These washers will help prevent wear and distortion of installation surfaces over time.

Features and Benefits


• Zinc plated mild steel

• Construction for durability

• Available in a range of sizes

Applications


RS PRO washers are an essential part of any fastener assembly. They decrease the surface load when joining materials, meaning there is less pressure on the material, resulting in a decrease chance of wear and tear over time. You can use them to make maintenance easier by allowing for smoother loosening and tightening of components. Plain washers are commonly used in many electronic, food, chemical and construction applications.


What is the difference between a plain washer and a penny washer?
Other than standard washers, you might also hear washers referred to as fender washers, penny washers and mudguard washers. These 'repair washers' have a larger external diameter in comparison to the inner diameter, meaning a larger distribution of surface area. They can be used with a worn fixing hole or to fasten larger surface areas.

Why RS PRO?


RS PRO aims to be your go-to brand for reliability and value for money. We source great parts at great prices and test everything with our in-house experts to ensure the quality you need. When it comes to tools and fasteners, we know that versatility and dependability are what you need. As such, we stock a variety of mainstay and specialist fasteners and couplers to suit any application. Whether you're a professional electrician, plumber, builder or DIY enthusiast, RS PRO is here to support you.

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