oval/truss head style any acceptable hole diameter any acceptable grip length 35000 double pounds per square inch shear strength oxide or nickel surface treated
3a thread class right-hand 0.437" thread length hexagon head style 0.688" grip length 24 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.641" thread length hexagon head style 0.183" grip length 24 thread quantity per inch navy special project cadmium surface treated unf thread series
Used on spec item. 3a thread class right-hand 0.912" thread length bevel-conical head style 0.055" hole diameter 18 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.375" thread length flat countersunk head style 28 thread quantity per inch cadmium screw surface treated unf thread series
Used on w/s:aircraft, viking s-3b; helicopter, seahawk, h-60; aircraft, orion p-3; helicopter, lamps mark iii, sh-60b. 3.625" inside diameter 3.812" outside diameter straight gap ring style cadmium surface treated
2a thread class right-hand 0.785" thread length dee head style 20 thread quantity per inch 1/2 inch porm 1/64 dia groove 1/16 inch w located 1-11/16 inch from thread end of bolt cadmium surface treated unf thread series