3/16" x 5/16", #4-40 TPI, Alodine, Aluminum, Hex, Standoff W/HELI-COIL Locking Insert Standoff Item Standoff Type Hex Overall Dimension 3/16 in Diameter x 5/16 in Length Thread Size #4-40 TPI Material Aluminum Finish Alodine 1200 Includes HELI-COIL...