1/4-20X7/16X3/ Standard Pattern Hex Machine Screw Nut 18 8 Stainless Steel Black Oxide and Oil (Pack Qty 2,000) BC-14NH188B

Hex Machine Screw Nut: Designed to be used specifically with machine screws. Stainless nuts are used with stainless machine screws where parts are subject to corrosive conditions. Square Machine Screw Nut: Offers a greater bearing surface for wrenching Steel: Any low carbon steel. Stainless: 18-8 stainless steel