Thread Insert,1/4-20,31/64 L,Pk10, Mfr#: 335-4, E-Z LOK

Self Locking Thread Insert, Wall Type Extra Heavy, Carbon Steel, Internal Thread Size 1/4-20, External Thread Size 1/2-13, Thread Type UNC Internal/UNC External, Length 31/64", Tap Sizes 1/2-13, Drill Size 27/64", Min. Full Thread Depth 9/16, External Thread Class 2A, Internal Thread Class 2B, Tensile Strength (PSI) 78,300, Brinell Hardness 163, For Use on Metal, Installation Screwdriver, Bolt/Nut, or Power Drive Tool 4ZE54, Package Quantity 10