Weld Nut Material Steel Finish Black Oxide Thread Size 1/2 In.-13 Base Height 3/32 in Base Width 3/4 in Base Length 1 1/4 in Collar Height 0.359375 in Collar Diameter 0.171875 in Number of Weld Projections 4 System of Measurement Inch Base Shape Tab For Hole Diameter 39/64 in Hole Location Center Pack Size Small Pack Package Quantity 50