12-24X7/16X532 Coarse Thread Standard Pattern Hex Machine Screw Nut Steel Nickel Finish (Pack Qty 5,000) BC-12NHNC

This is the most popular type of locknut because of its versatility, cost and ease of installation. Doesn’t gall screw threads Steel: Nuts-- AISI 1008-1020 or equivalent steel; Washers-- 1050-03 or equivalent steel.Stainless: Nuts-- One of the following austenitic alloys: 302, 303, 303Se, 304, XM7; Washers-- 420 stainless Steel: Washers-- Rockwell C38 minimum, C44 maximum Stainless: Washers-- Rockwell C40 - 50