3a thread class right-hand 0.312" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unc thread series
3a thread class right-hand 0.667" thread length flat countersunk head style 32 thread quantity per inch navy special project very low magnetic permeability unf thread series
3a thread class right-hand 0.792" thread length flat countersunk head style 32 thread quantity per inch very low magnetic permeability unf thread series
2a thread class right-hand 0.484" thread length pan head style 20 thread quantity per inch navy special project cadmium surface treated unc thread series
3a thread class right-hand 0.314" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjf thread series
3a thread class right-hand 0.630" grip length 32 thread quantity per inch 132000 single pounds per square inch shear strength nickel surface treated unjf thread series
3a thread class right-hand 0.400" thread length hexagon head style 0.046" hole diameter 1.740" grip length 28 thread quantity per inch unjf thread series
3a thread class right-hand 0.443" grip length 32 thread quantity per inch 132000 single pounds per square inch shear strength nickel surface treated unjf thread series
Used on aircraft, ac-130h, mc-130h, ec-130e, hc-130); helicopter, iroquois uh-1; u-2 support equipment; aircraft, stratofortress b-52; engine, aircraft, tf39-fe-1 (c-5a); aircraft, phantom f-4; aircraft, stratolifter c-135; t1a aircraft; engine, aircraft, tf-33-p-7 (c-141a/b); engine, aircraft tf33-pw-102 (c-135e, ec-135h/k/p). flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.063" grip length ns" letters after the material code "b" indicate no preference to lock type (may be visible or internal) . rivets with no letter code (indicating visible lock type) chromate body surface treated
3a thread class right-hand 0.428" thread length flat countersunk head style 0.928" grip length 20 thread quantity per inch passivate surface treated unjf thread series
3b thread class right-hand flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.178" grip length 32 thread quantity per inch furnished without bolt anodize sleeve surface treated unjf thread series
2a thread class right-hand 0.438" thread length flat countersunk head style 56 thread quantity per inch navy special project passivate surface treated unc thread series
3a thread class right-hand 0.566" thread length hexagon head style 0.070" hole diameter 14 thread quantity per inch cadmium surface treated unc thread series
Used on H-3. 32 thread class right-hand 1.000" thread length hexagon extended washer head style 3.700" grip length 24 thread quantity per inch nha 56137-29000 passivate surface treated unf thread series
