3b thread class right-hand 0.440" thread length 20 thread quantity per inch 6 holes in flange equally spaced 0.093 in. dia passivate surface treated flange unjf thread series
universal head style 0.063" grip length 1390 single pounds per square inch shear strength lock ring nickel-copper alloy qq-n-281 anodize sleeve or chromate sleeve surface treated
2a thread class right-hand 0.988" thread length hexagon head style 0.062" hole diameter 16 thread quantity per inch cadmium surface treated unc thread series