3a thread class right-hand 0.314" thread length pan no. 2 head style 32 thread quantity per inch dri-film lubricated fasteners per mil-l-8937 unjf thread series
3a thread class right-hand 0.500" thread length flat countersunk head style 32 thread quantity per inch cadmium or chromate screw surface treated unc thread series
2a thread class right-hand 0.511" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.461" thread length flat countersunk head style 40 thread quantity per inch anodize screw surface treated unf thread series
2a thread class right-hand 0.312" thread length pan no. 2 head style 28 thread quantity per inch passivate screw surface treated 1 buna n o-ring furnised unf thread series