3a thread class right-hand knurled no. 5 head style 32 thread quantity per inch rubber o-ring furnished anodize spring surface treated unf thread series
2a thread class right-hand 1.000" thread length hexagon extended washer head style 18 thread quantity per inch passivate surface treated unf thread series
Used on made from ms24693-c28 altered item. 2a thread class right-hand 0.188" thread length flat countersunk head style 32 thread quantity per inch black oxide coat passivate surface treated unc thread series
3a thread class right-hand 0.375" thread length square head style 32 thread quantity per inch point on top on head length 0.170 in. , dia. 0.188in. passivate surface treated unjf thread series
Used on agm129a. 3a thread class left-hand 1.255" thread length 18 thread quantity per inch internal thd full lgth 0.375-24 unjf-3b flange unjf thread series