Weld Nut Material Steel Finish Black Oxide Thread Size 1/4 In.-20 Base Height 3/32 in Base Width 1/2 in Base Length 15/16 in Collar Height 0.046875 in Collar Diameter 0.28125 in System of Measurement Inch Base Shape Hex Barrel or Collar Type Pilot For Hole Diameter 5/16 in Hole Center to Outside Edge 1/4 in Hole Location Offset Pack Size Small Pack Package Quantity 50