2a thread class right-hand 0.250" thread length undercut pan no. 2 head style 32 thread quantity per inch passivate screw surface treated unc thread series
3a thread class right-hand 0.873" thread length double hexagon w/hole head style 18 thread quantity per inch 145000 psi min shear strength; for applications to 700 deg fahrenheit passivate surface treated unjf thread series
2a nut thread b thread class right-hand nut thread b 0.050" nut thread b thread length 2.170" overall length 20 nut thread b thread quantity per inch small end has slotted internal drive cadmium surface treated shouldered unf nut thread b thread series
3a thread class right-hand 1.120" grip length 28 thread quantity per inch 10600 double pounds per square inch shear strength cadmium surface treated unjf thread series
3a thread class right-hand 1.370" grip length 28 thread quantity per inch 10600 double pounds per square inch shear strength cadmium surface treated unjf thread series
3a thread class right-hand 0.755" grip length 24 thread quantity per inch 95000 single pounds per square inch shear strength 0.076 in. min 0.086 in. max drilled hole 0.234 in. min 0.254 in. max from thd end passivate surface treated unjf thread series
3a thread class right-hand flush countersunk head style 0.615" grip length 28 thread quantity per inch 108000 single pounds per square inch shear strength cadmium surface treated unjf thread series
3a thread class right-hand 0.802" grip length 24 thread quantity per inch 108000 single pounds per square inch shear strength cadmium surface treated unjf thread series
Used on w/s: aircraft, f-111; aircraft, intruder a-6e; ah-64-d longbow; helicopter, apache ah-64; aircraft, thunderbolt ii, a-10; helicopter, utility/search and recovery un-1n. flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.063" grip length chromate sleeve surface treated
3a thread class right-hand 1.284" thread length dished hexagon head style 2.365" grip length 12 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.782" thread length pan head style 32 thread quantity per inch internal drive ribbed cadmium surface treated unjc thread series
3a thread class right-hand 0.287" thread length flat countersunk head style 32 thread quantity per inch passivate fastener surface treated unc thread series
3a thread class right-hand 0.509" thread length hexagon head style 20 thread quantity per inch navy special project cadmium surface treated unjf thread series
3a thread class right-hand 0.812" thread length hexagon head style 0.235" grip length 20 thread quantity per inch passivate surface treated unjf thread series
