RS PRO A4 316 Stainless Steel Plain Washers, M16, DIN 125A

Subtotal (1 bag of 50 units)*

£19.48

(exc. VAT)

£23.38

(inc. VAT)

Add to Basket
Select or type quantity
In Stock
  • 54 unit(s) ready to ship
  • Plus 18 unit(s) ready to ship from another location
  • Plus 64 unit(s) shipping from 29 October 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Bag(s)
Per Bag
Per unit*
1 +£19.48£0.39

*price indicative

Alternative

This product is not currently available. Here is our alternative recommendation.

1 Bag of 50

£18.25

(exc. VAT)

£21.90

(inc. VAT)

RS Stock No.:
797-6361
Brand:
RS PRO
Find similar products by selecting one or more attributes.
Select all

Brand

RS PRO

For Screw/Bolt Size

M16

Washer Type

Plain

Inside Diameter

17.0mm

Outside Diameter

30.0mm

Standards Met

DIN 125A

Material

Stainless Steel

Stainless Steel Type

A4 316

Finish

Plain

Thickness

3.0mm

RS PRO Stainless Steel Plain Washers


From the trusted RS PRO Brand, these stainless steel 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. As they are made of stainless steel, they have an element of corrosion resistance and are suitable for use in many environments.

Available in the following sizes:


189-636 is an M4 size A4 Stainless Steel Plain Washer

189-620 is an M3 size A4 Stainless Steel Plain Washer

189-642 is an M5 size A4 Stainless Steel Plain Washer

189-658 is an M6 size A4 Stainless Steel Plain Washer

248-4595 is an M2 size A4 Stainless Steel Plain Washer

248-4618 is an M16 size A4 Stainless Steel Plain Washer

248-7106 is an M2.5 size A4 Stainless Steel Plain Washer

797-6361 is a Form A M16 size A4 Stainless Steel Plain Washer

797-6364 is a Form A M10 size A4 Stainless Steel Plain Washer

797-6367 is a Form A M12 size A4 Stainless Steel Plain Washer

797-6370 is a Form A M20 size A4 Stainless Steel Plain Washer

797-6389 is a Form A M8 size A4 Stainless Steel Plain 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


• A4, 316 plain stainless 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 a Form A Washer?


Form A is a British Standard indicator for the metric outer diameter and thickness of a steel washer. It is a quick reference that in this case indicates a type of washer with a 'normal' diameter and thickness. Form A washers are suitable for most 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.

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.

Standards

BS4320

Related links