2b thread class right-hand 32 thread quantity per inch slot 0.031 in. wide cut into small dia to depth of 0.165 in.; slot closed to 0.016 in. wide to provide self-locking feature nickel surface treated
0.375" hole diameter 0.870" outside diameter 0.100" material thickness all sharp edges broken 0.015 in. radius or chamfered 45 deg by 0.015 in. 15 recessed