Used on apache attack helicopter. 3a thread class 0.250" thread length hexagon head style 32 thread quantity per inch screw, captive material screw alloy steel 8740 per ams 6322 or equivalent, sleeve cres 304 per ams-qq-s-763; heat treat screw harness rc 38-41, sleeve none; finish screw cadmium plate per ams-qq-p-416, type ii, class 2, sleeve cadmium plate per ams-qq-p-416, type ii, class 2; thread per mil-s-8879; grip thickness 0.063-0.125 inch unjc thread series
Used on apache attack helicopter. 3a thread class 0.281" thread length hexagon head style 28 thread quantity per inch screw, captive material screw alloy steel 8740, per ams 6322 or equivalent, sleeve cres 304, per ams-qq-s-763; heat treatment screw harness rc 38-41, sleeve none; finish screw cadmium plate per ams qq-p-416, type ii, class 2, sleeve cadmium plate per ams-qq-p-416, type ii, class 2; thread per mil-s-8879; driver size 0.250 inch; shoulder 0.193 dia porm 0.003; head 0.475 inch dia; head cross 0.168, width 0.281, hex 0.181 inch; grip thickness 0.188-0.250 inch unjf thread series
Used on A-10. 3a thread class right-hand 1.870" grip length 24 thread quantity per inch 16000 double pounds per square inch shear strength rivet cadmium surface treated unjf thread series
Used on A-10. 3a thread class right-hand 1.995" grip length 20 thread quantity per inch 30600 double pounds per square inch shear strength rivet cadmium surface treated unjf thread series
Used on A-10. 3a thread class right-hand 1.745" grip length 20 thread quantity per inch 55400 double pounds per square inch shear strength rivet unjf thread series
Used on A-10. 3a thread class right-hand 1.870" grip length 28 thread quantity per inch 61000 double pounds per square inch shear strength rivet cadmium surface treated unjf thread series
