3a nut thread thread class right-hand nut thread 0.938" stud thread thread length 2.570" overall length 16 stud thread thread quantity per inch nut end tapped 1/4-28 unf-1b 0.320 in. min deep cadmium surface treated unf nut thread thread series
3a thread class right-hand 0.280" thread length flat chamfer head style 28 thread quantity per inch navy special project bearing surface of head chamfered 0.060 in. by 45.0 deg cadmium surface treated unf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 90000 single pounds per square inch shear strength passivate surface treated
3a thread class right-hand 0.469" thread length hexagon head style 0.048" hole diameter 0.875" grip length 28 thread quantity per inch unf thread series
3a thread class right-hand 0.469" thread length hexagon head style 0.048" hole diameter 1.250" grip length 28 thread quantity per inch unf thread series
3a thread class right-hand 0.441" thread length flat countersunk head style 0.490" grip length 24 thread quantity per inch cadmium surface treated unjf thread series
Used on deep submergence systems;phalanx;lantirn;spruance class dd (963);milstar system;sot equipment (se),b-2 bomber;forrestal class cv;nimitz class cvn;wasp class lhd;supply. 3a thread class right-hand flat chamfer head style 32 thread quantity per inch head vertically knurled anodize head surface treated unf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.907" grip length 9300 double pounds per square inch shear strength self-locking cadmium body surface treated
3a thread class right-hand 0.444" thread length dished hexagon head style 1.990" grip length 24 thread quantity per inch cadmium surface treated unjf thread series
2a thread class right-hand 0.563" thread length flat countersunk head style 64 thread quantity per inch cadmium screw surface treated unc thread series
