M12-1.75 Din 6923 Metric Class 8 Hex Flange Nut Serrated Zinc (Pack Qty 500) BC-M12D6923S-8

Hex nut with an enlarged circular base flaring out from the bottom of the nut. The bearing surface of the flange has serrations which displace material on the mating surface when the nut is wrenched into place, forming a connection which resists loosening. Class 8: Requires a greater amount of torque to loosen than to tighten the nut. Will span oversized or poorly aligned holes. Flange provides a more uniform bearing-stress to clamp-force ratio than other low carbon lock nuts. Does not gall screw threads. Classc A2 50: Nuts are intended for use with stainless screws and bolts. The flange design will span oversized or poorly aligned holes. The flange provides a more uniform bearing-stress to clamp-force ratio.