2a thread class right-hand 0.670" thread length pan no. 2 head style 40 thread quantity per inch passivate screw surface treated installed in head on bearing surface is an o-ring, silicone rubber, composition a unc thread series
3a thread class right-hand 0.128" thread length flat countersunk head style 72 thread quantity per inch cadmium screw surface treated unf thread series
3a thread class right-hand 0.495" grip length 20 thread quantity per inch 125000 single pounds per square inch shear strength identify with white paint on head unjf thread series
3a thread class right-hand flush countersunk head style 0.865" grip length 28 thread quantity per inch 125000 single pounds per square inch shear strength passivate surface treated unjf thread series
3a thread class right-hand 0.250" thread length hexagon head style 32 thread quantity per inch navy special project passivate secondary washerpassivate primary washeranodize stand-offpassivate fastener surface treated unc thread series
Used on E-13. 3a thread class right-hand 0.450" thread length 1.467" overall length 24 thread quantity per inch next assy 8836796 round, closed unf thread series
2a thread class right-hand 2.000" thread length flat chamfer head style 0.250" hole diameter 0.560" grip length 16 thread quantity per inch unc thread series
2a thread class right-hand 0.202" thread length knurled no. 4 head style 32 thread quantity per inch passivate screw surface treated a projection of .094 extends beyond threads unc thread series
2a thread class right-hand 0.150" thread length pan no. 2 head style 56 thread quantity per inch navy special project passivate screw surface treated unc thread series
3a thread class right-hand 0.307" grip length 32 thread quantity per inch 95000 single pounds per square inch shear strength color code orange on thread end aluminum surface treated unjc thread series
3a thread class right-hand countersunk w/reverse chamfer head style 0.615" grip length 24 thread quantity per inch 95000 single pounds per square inch shear strength passivate surface treated unjf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 1.094" grip length the letter "u" signifies single action fastener without frangible type of locking collar or locking collar cap passivate sleeve or cadmium sleeve surface treated
