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Stainless + Black

Split Lock Washer

DIN 127B

SKU: 00-WL-BLKSS
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Detail & Specs

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Metric Split Lock Washer /  Black Stainless Steel DIN 127B

Split lock washers exert a spring force between the head of the fastener and the parent material, increasing friction and providing resistance against rotation / loosening from vibration.

DIN 127-B lock washers have square ends.


Material: Stainless Steel 
Suitable for damp locations
Corrosion resistant


Finish: Black Oxide 
- Abrasion resistant, does not peel, chip or rub off 
- Reduces friction, prevents galling 
- Does not change the strength of the stainless steel 
- Practically no dimensional change to base fastener 
- The spray applied during the coating process wears off over time, revealing an attractive matte black finish 

The black oxide coating per MIL-DTL-13924, Class 4 on 300 series corrosion resistant steel meets 96 hours of resistance in a 5% salt spray (fog) test in accordance with ASTM B117. We recommend using stainless steel installation tools to prevent extraneous rust.

For any application involving marine (salt water), use A4 / 316 Stainless Steel washers.

Also known as general use spring lock metric washer, helical shape washer. Not to be used with reverse thread (left hand) fasteners.