3b thread class 0.620 " material thickness 28 thread quantity per inch insert located in center of nut 0.375-16 unc 3b, insert part number MS122123 cagec 96906, color forrest green chromate except insert surface treated
2b thread class right-hand 40 thread quantity per inch tapped hole location 0.125 in. from center to end along length, tapped hole is centered along width chromate surface treated