2b thread class right-hand 40 thread quantity per inch nut slotted through flats parallel to bearing surface 0.020 in. wide 0.261 in. deep. 0.050 in. from bearing surface
2b thread class right-hand 40 thread quantity per inch nut slotted through flats parallel to bearing surface 0.020 in. wide 0.261 in. deep, 0.050 in. from bearing surface