Description
Metric hex nut with a serrated flange at the bottom. Flange acts as an integrated lock washer with serrations digging into installation material to resist vibration and loosening. Known as a serrated flange nut, serrated hex flange nut, flange lock nut, or serrated hex flange lock nut. CR+3 case-hardened zinc plated class 8 steel. DIN 6923 / ISO 4161 sizing standards.
Size: M4-0.7
