3a thread class right-hand 0.338" thread length flat countersunk head style 64 thread quantity per inch cadmium screw surface treated unf thread series
2a thread class right-hand 1.500" thread length hexagon head style 13 thread quantity per inch item has a hole drilled through the threaded end, and is 0.222 in. from the end, diameter of hole is 0.129in. unc thread series
3a thread class right-hand 0.375" thread length knurled no. 4 head style 32 thread quantity per inch straight knurl, color black oxide fastener surface treated unf thread series
3a thread class right-hand 0.175" thread length flat countersunk head style 40 thread quantity per inch cadmium fastener surface treated unc thread series