RS PRO Steel Bright Zinc Washers, M20, BS 4320G

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Subtotal (1 bag of 50 units)*

$31.50

(exc. GST)

$34.65

(inc. GST)

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  • Plus 13 unit(s) shipping from 10 February 2026
  • Plus 39 unit(s) shipping from 10 February 2026
  • Plus 30 unit(s) shipping from 15 April 2026
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Bag(s)
Per Bag
Per unit*
1 - 4$31.50$0.63
5 +$25.92$0.518

*price indicative

RS Stock No.:
122-4398
Brand:
RS PRO
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Brand

RS PRO

Product Type

Washers

Compatible Screw/Bolt Size

M20

External Diameter

60mm

Inside Diameter

22 mm

Standards/Approvals

BS 4320G

Material

Steel

Finish

Bright Zinc

Thickness

5mm

RS PRO Bright Zinc Plated Steel Plain Washer, 5 mm Thickness, M20 (Form G)


These Form G plain washers have three times the outside diameter of standard washers. That means they provide a large surface area for even load distribution at mating surfaces of fastener assemblies. As a result, they're exceptionally good at reducing wear and tear over time.

Made from steel, the washers are ideal for use with soft materials like timber and plastic and have been designed to be compatible with screws and bolts of M20 threading. A bright zinc-plated finish enhances resistance to corrosion and rust.

Part of the RS PRO range, this product is rigorously tested by engineers for quality and consistency. The washers comply with Electrostatic Control Standards ANSI/ESD S20.20:2014 and BS EN 61340-5-1:2007 that specify requirements for prevention of electrostatic damage. They're also RoHS compliant, meaning they make minimal use of restricted substances.

Features and Benefits


• Form G plain washer

• Inside diameter of 22 mm

• Outside diameter of 60 mm

• Thickness of 5 mm

• Made from bright zinc-plated steel for fair corrosion resistance

• Compatible with M20 bolts and screws

• Conforms to ANSI/ESD S20.20:2014 and BS EN 61340-5-1:2007 Electrostatic Control Standards

• RoHS (Restriction of Hazardous Substances) compliant

RS PRO


RS PRO is our own brand range and brings you a wide range of high-quality, great value products offering you more choice. Trusted by engineers all over the world, every part of every RS PRO product has been rigorously tested against demanding industry standards; they’re only given the RS PRO Seal of Approval if we’re confident of their exceptional quality, which means you can be confident too.

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