2b thread class right-hand 0.500" material thickness 40 thread quantity per inch holes 0.800 in. apart; two additional tapped holes 0.086-56unc-2b thru side of item 0.400 in. apart; one drilled hole 0.060 in. dia nad 0.050 in. deep in side of item 0.445 in. from top chromate surface treated
3b thread class right-hand 16 thread quantity per inch 2 mounting holes 0.190-24unc-3b countersunk 82 deg to 0.390 in. dia 90 deg from wrenching slots oxide surface treated