3a thread class right-hand 0.260" thread length hexagon head style 1.375" grip length 24 thread quantity per inch cadmium threads surface treated unf thread series
3a thread class right-hand flush countersunk head style 0.130" grip length 125000 single pounds per square inch shear strength passivate surface treated unjc thread series
2a thread class right-hand 0.375" thread length knurled no. 1 head style 20 thread quantity per inch cone point 82.0 degree passivate surface treated unc thread series
Used on aircraft, t-39; austin ship class lpd-4 amphibious transport docks; ticonderoga class cg (47); helicopter, search and rescue, hh-60h; helicopter, mh-53e; helicopter, uscg search and rescue, hh-60j; aircraft, (ac-130h, mc-130h, ec-130e, hc-130); helicopter, advance attack, ah-1w; missile, air--to-air, sparrow (aim-7); helicopter, carrier based asw, sh-60f. 2a thread class right-hand 0.477" thread length flat countersunk head style 40 thread quantity per inch unc thread series
2a thread class right-hand 0.940" thread length flat countersunk head style 24 thread quantity per inch passivate screw surface treated unf thread series
2a thread class right-hand 3.922" thread length knurled no. 1 head style 16 thread quantity per inch point grooved for retaining spring unc thread series
3a thread class right-hand 0.533" thread length flat chamfer head style 32 thread quantity per inch finish color black oxide surface treated unc thread series
Used on kidd class ddg; gun, 5-in./54 cal, mk-42 & 45; wasp class lhd; fms build frigates class ships; ticonderoga class cg (47); spruance class dd (963); arleigh burke class ddg. 3a thread class right-hand 0.284" thread length fillister head style 28 thread quantity per inch passivate surface treated unf thread series
3a thread class right-hand 0.349" thread length fillister head style 20 thread quantity per inch contains positive locking device of spring loaded balls, release is by plunger in head of bolt unf thread series
