2a thread class right-hand 0.596" thread length hexagon head style 20 thread quantity per inch first shoulder threaded 0.4375-20 unf 2a oxide surface treated unc thread series
Used on spec item. 3a thread class right-hand 0.922" thread length hexagon head style 0.546" grip length 18 thread quantity per inch passivate surface treated unf thread series
3a thread class right-hand 0.740" thread length hexagon head style 0.502" grip length 28 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.306" thread length oval countersunk head style 0.240" grip length 28 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.516" thread length oval countersunk head style 0.516" grip length 28 thread quantity per inch 3 keywasys 0.993 in. min. passivate surface treated unjf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 23000 single pounds per square inch shear strength cadmium surface treated
3a thread class right-hand 0.501" thread length pan no. 2 head style 2.991" grip length 24 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.324" thread length undercut hexagon head style 0.046" hole diameter 0.365" grip length 32 thread quantity per inch navy special project unjf thread series
3a thread class right-hand 0.833" thread length dished hexagon head style 2.125" grip length 12 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.624" thread length double hexagon head style 1.928" grip length 20 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand headless (setscrew) head style 20 thread quantity per inch concentric hole 0.220 in. dia thru center. two holes 0.046 in. dia at 45 deg from top of screw 180 deg apart unjf thread series
2a thread class right-hand 0.282" thread length hexagon head style 0.060" hole diameter 20 thread quantity per inch cadmium surface treated unc thread series
3a thread class right-hand 1.330" thread length double hexagon extended washer head style 13 thread quantity per inch cadmium surface treated unc thread series