2a thread class right-hand 2.312" thread length hexagon head style 5 thread quantity per inch shoulder tapers down from head bearing surface at rate of 0.125 in. dia per foot unc thread series
3a thread class right-hand 0.516" thread length hexagon head style 24 thread quantity per inch undercut 0.031 in. lg by 0.016 in. radius under head, 0.007 in. radius between shoulder unf thread series
2a thread class right-hand 0.486" thread length hexagon head style 18 thread quantity per inch paint color gray, head relieved 0.375 in. dia by 0.093 in. deep, 0.250 in. from end of head paint surface treated unc thread series
2a thread class right-hand 0.472" thread length hexagon head style 18 thread quantity per inch navy special project cadmium surface treated unf thread series
3a thread class right-hand 0.531" thread length undercut hexagon head style 24 thread quantity per inch rounded undercut 0.010 in. smaller than body 1/32 in. wide. 0.007 in. radius between shoulder unf thread series
1a thread class right-hand 0.205" thread length hexagon head style 28 thread quantity per inch third shoulder 0.494 in. min 0.498 in. max by 0.523 in. lg passivate surface treated unf thread series
3a thread class right-hand 0.251" thread length flat chamfer head style 24 thread quantity per inch groove 0.030 in. wide by 0.030 in. deep between threads phosphate surface treated unf thread series
3a thread class right-hand 0.313" thread length hexagon head style 20 thread quantity per inch groove 0.180 in. dia by 0.093 in. wide w/0.030 in. radius between shoulder zinc surface treated unc thread series
3a thread class right-hand 0.730" thread length hexagon head style 16 thread quantity per inch shoulder relieved under head 0.031 in.radius, thread relieved at end of shoulder 0.047 in. deep 0.062 in. wide unc thread series
3a thread class right-hand 1.110" thread length double hexagon w/hole head style 0.050" hole diameter 18 thread quantity per inch first shoulder separated by two grooves 0.572 in. min 0.574 in. max dia at end of second shoulder three grooves 0.660 in. nom dia cadmium surface treated unjf thread series
3a thread class right-hand 0.531" thread length hexagon head style 0.070" hole diameter 20 thread quantity per inch navy special project unc thread series
3a thread class right-hand 0.374" thread length hexagon head style 24 thread quantity per inch groove 1/16 in. w by 0.250 in. dia between threads unf thread series
2a thread class right-hand 0.311" thread length square extended washer head style 32 thread quantity per inch groove between shoulder unf thread series
