Metric Hex Jam Nuts (DIN 439), A4-70 Stainless

METRIC STAINLESS A4 (316) HEX THIN NUTS, DIN 439 2 TYPE B

Metric hex jam nuts are thin hex nuts. They have coarse and fine machine screw threads, like hex nuts, but their reduced thickness results in a reduction in strength. They are used with small machine screws to save space or to "jam" against another nut to create a locking action.