M4-0.7X8 Metric Din7985A Phil Pan Sem type H Din127B Split Lock washer Full Thread 18-8 Stainless (Pack Qty 5,000) BC-M48SPP188

Metric Din7985A Phil Pan Sem type H Din127B Split Lock washer Full Thread 18-8 Stainless

The washer/screw assembly makes this a locking screw with the washer providing the locking action. Machine pre-assembly provides cost savings to the end user. The spring lockwasher variety is preferred for use with hardened bearing surfaces