Shake Proof Washers

Shake Proof (toothed lock) washers are often used on threaded bulk head fittings with lock nuts. Sharp teeth are formed in a twisted configuration and the edges bite into both the bolt head/nut and the mating surface, stopping the lock nut backing off under vibration.

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SPWM10 - 3/8" (M10) Shake Proof Washer

From £0.19 (£0.23 inc. VAT @ 20%)

Internal serrated shake proof washer for M10 , 3/8" 1/8" BSP

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SPWM7/16 - 7/16" Shake Proof Washer

From £0.27 (£0.32 inc. VAT @ 20%)

Internal Serrated Shake Proof washer for 7/16" ID

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SPWM1/2 - 1/2" Shake Proof Washer

From £0.22 (£0.26 inc. VAT @ 20%)

Internal Serrated Shake Proof washer for 1/2" ID

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SPW5/8 - 5/8" Shake Proof Washer

From £0.24 (£0.29 inc. VAT @ 20%)

Internal Serrated Shake Proof washer for 5/8" Whitworth ID

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SPWM19 - 3/4" (M19) Shake Proof Washer

From £0.35 (£0.42 inc. VAT @ 20%)

Internal Serrated Shake Proof washer for 3/4" (M19) inner diameter

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SPWM20 - M20 Shake Proof Washer

From £0.37 (£0.44 inc. VAT @ 20%)

Internal Serrated Shake Proof washer for M20 ID