RS PRO A2 304 Stainless Steel Internal Tooth Shakeproof Washer, M4, DIN 6797J

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Subtotal (1 bag of 100 units)*

£3.50

(exc. VAT)

£4.20

(inc. VAT)

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  • 651 unit(s) ready to ship
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  • Plus 740 unit(s) shipping from 05 November 2025
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Per unit*
1 - 4£3.50£0.035
5 - 9£3.33£0.033
10 - 29£3.14£0.031
30 +£2.94£0.029

*price indicative

RS Stock No.:
187-0585
Brand:
RS PRO
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Brand

RS PRO

For Screw/Bolt Size

M4

Washer Type

Internal Tooth

Inside Diameter

4.30mm

Outside Diameter

8.0mm

Standards Met

DIN 6797J

Material

Stainless Steel

Stainless Steel Type

A2 304

Thickness

0.50mm

RS PRO Plain Stainless Steel Internal Tooth Shakeproof Washer, M4, A2 304


This internal tooth shakeproof washer can be used at home or in the workplace to prevent nuts, bolts and screws from coming loose. It’s part of our trusted RS PRO range.

These shakeproof washers have serrated prongs (or teeth) inside a metal disc. The disc works to hold the screw in place, while the teeth lock into the head of the nut being tightened. The teeth are slightly bent to provide a secure hold and will not budge under the strain of weight or vibrations.

This washer is made of a stainless steel material that's hardwearing, low-maintenance and resistant to corrosion. As the teeth are located inside the disc, the finished product has a more discreet appearance than external lock washers.

These washers are designed for use with M4 screws and bolts. They’re RoHS-compliant as containing minimal amounts of restricted hazardous substances.

Features and Benefits


• Internal shakeproof washer
• For M4 screw and bolt size
• Internal tooth washer type
• Inside diameter of 4.3 mm
• Outer diameter of 8 mm
• Thickness of 0.5 mm
• Made from corrosion-resistant stainless steel (type A2 304)
• Plain finish
• RoHS compliant for restricted hazardous substances

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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