Used on power supply. 3a thread class 0.574" thread length dee chamfer head style 28 thread quantity per inch cadmium surface treated unf thread series
tapered pan head style 0.094" grip length single action fastener without frangible type of locking collar or locking collar cap cadmium sleeve surface treated
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.719" grip length single action fastener without frangible type of locking collar or locking collar cap cadmium sleeve surface treated
3a thread class right-hand 0.287" thread length oval countersunk head style 0.802" grip length 28 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.338" thread length flat countersunk head style 0.552" grip length 32 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 1.720" thread length pan head style 0.270" hole diameter 20 thread quantity per inch countersunk hole at the end of threads, 0.095 in. min, 0.155 in. max dia; groove, 0.580 in. lg from end, 1.030 in. min, 1.040 in. max dia un thread series
3a thread class right-hand flat chamfer head style 32 thread quantity per inch threaded head 0.250-28 in; surface finish 32.0 microin. on head unf thread series
3a thread class right-hand 1.260" thread length hexagon extended washer head style 20 thread quantity per inch phosphate surface treated unf thread series
3a thread class right-hand 1.260" thread length hexagon extended washer head style 20 thread quantity per inch phosphate surface treated unf thread series
