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  11. Belleville Spring Lock Washer 17-7 PH Stainless Steel for M4 Screw Size 4.200mm ID 9.000mm OD, 10PK
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Belleville Spring Lock Washer 17-7 PH Stainless Steel for M4 Screw Size 4.200mm ID 9.000mm OD, 10PK

product price: $19.85
/pk 10, $1.99/ea
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Product Information

Description

Also known as conical washers these have a slightly cupped shape that gives them spring-like flexibility to grip tighter than split and tooth lock washers. They minimize loosening from wear temperature changes and vibration. Load-rated Belleville disc springs are also available.18-8 stainless steel and 17-7 PH stainless steel washers have good chemical resistance and may be mildly magnetic. 17-7 PH stainless steel washers are stronger than 18-8 stainless steel washers.

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