WELD NUT, MATERIAL STEEL, FINISH BLACK OXIDE, THREAD SIZE 5/16 IN.-18, BASE HEIGHT 1/8 IN, BASE WIDTH 5/8 IN, BASE LENGTH 63/64 IN, COLLAR HEIGHT 0.078125 IN, COLLAR DIAMETER 0.359375 IN, NUMBER OF WELD PROJECTIONS 0, SYSTEM OF MEASUREMENT INCH, BASE SHAPE HEX, BARREL OR COLLAR TYPE PILOT, FOR HOLE DIAMETER 3/8 IN, HOLE CENTER TO OUTSIDE EDGE 9/32 IN, HOLE LOCATION OFFSET, PACK SIZE SMALL PACK, PACKAGE QUANTITY 50