3a thread class right-hand 0.569" thread length dished hexagon head style 1.740" grip length 20 thread quantity per inch cadmium surface treated unjf thread series
2a thread class right-hand 1.380" thread length flat chamfer head style 0.187" hole diameter 32 thread quantity per inch navy special project oxide surface treated unef thread series
3a thread class right-hand 0.376" grip length 24 thread quantity per inch 156000 single pounds per square inch shear strength nickel surface treated unjf thread series
3a thread class right-hand 1.250" thread length flat chamfer head style 24 thread quantity per inch cadmium fastener surface treated unrf thread series
3a thread class right-hand 0.251" thread length pan head style 1.740" grip length 32 thread quantity per inch cadmium surface treated unjc thread series
3a stud thread thread class right-hand 0.450" stud thread thread length 0.970" overall length 28 stud thread thread quantity per inch threaded hole in head end, no. 5-40 nc-3b thread, .31 in. to .25 in. deep flush head unf stud thread thread series
3a thread class right-hand 0.620" thread length flat countersunk head style 20 thread quantity per inch cadmium fastener surface treated unc thread series