3a thread class right-hand flush countersunk head style 0.751" grip length 56 thread quantity per inch 108000 single pounds per square inch shear strength cadmium surface treated uns thread series
3a thread class right-hand 0.532" thread length flat chamfer head style 16 thread quantity per inch furnished with undercut 0.093 nom. in. wide to root dia. zinc surface treated unc thread series
3a thread class right-hand 1.377" thread length flat chamfer head style 0.044" hole diameter 24 thread quantity per inch zinc surface treated unc thread series
Used on spec item. 3a thread class right-hand headless (setscrew) head style 24 thread quantity per inch passivate fastener surface treated unf thread series
3a nut thread a thread class right-hand nut thread a 0.875" nut thread a thread length 1.242 feet overall length 18 nut thread a thread quantity per inch unf nut thread a thread series
right-hand flat countersunk undercut head style two extensions on head, first extension 0.250 dia. hole in center of extension 0.039 in. dia., second extension 0.125 in. dia.
