2a thread class right-hand 0.380" thread length knurled no. 1 head style 20 thread quantity per inch passivate fastener surface treated unc thread series
2a thread class right-hand knurled no. 4 head style 32 thread quantity per inch retainer shall be thermoplastic passivate fastener surface treated unc thread series
3a thread class right-hand flat chamfer head style 28 thread quantity per inch retainer nut thread dia. 0.375-24unf-2a: head vertically knurled anodize head surface treated unf thread series
2a thread class right-hand 0.250" thread length flat countersunk head style 32 thread quantity per inch navy special project passivate fastener surface treated unf thread series
2a thread class right-hand 0.203" thread length flat countersunk head style 32 thread quantity per inch anodize stand-off surface treated unc thread series
3a thread class right-hand 0.250" thread length flat chamfer head style 32 thread quantity per inch anodize stand-off surface treated unc thread series