M4 External Tooth Countersunk Serrated Lock Washer DIN 6798V, Class 350 HV, Spring Steel, Zinc Plated
WHV600-500
https://www.fastenermart.com/mm5/graphics/00000001/DIN6798V.gif
8.43
649.14
2
8.43
100.00
pcs
649.14
10000.00
pcs