4-40 Thin Pattern Nylon Insert Hex Lock Nut 18 8 Stainless Steel Black Oxide (Pack Qty 2,000) BC-04NST188B

Thin Pattern Nylon Insert Hex Lock Nut 18 8 Stainless Steel Black Oxide

Same general applications as the standard pattern, but thin pattern nuts are used when an insufficient number of projecting threads are present to use a standard nylon insert nut.