0.250" hole diameter 0.500" outside diameter 0.060" material thickness groove 0.035 in. on side of washer, groove angle of 44 deg min passivate surface treated recessed both sides
3b thread class right-hand 28 thread quantity per inch six slots equally spaced 0.078 in. min 0.109 in. max wide by 0.157 in. min 0.187 in. max deep; dry film lubricant passivate surface treated