2a thread class right-hand 0.146" thread length flat countersunk head style 48 thread quantity per inch navy special project passivate surface treated unc thread series
2a thread class right-hand 1.250" thread length hexagon head style 0.094" hole diameter 13 thread quantity per inch cadmium surface treated unc thread series
3a thread class right-hand 0.875" thread length hexagon head style 0.070" hole diameter 24 thread quantity per inch cadmium surface treated unf thread series
Used on m109 howitzer family. 2a thread class right-hand 1.750" thread length 9.8175" overall length 24 thread quantity per inch nut MS35690-707 welded to shank below eye; optional forging has 0.719 dia eye w/0.3905 stk dia or 0.688 dia eye w/0.3435 stk dia cadmium surface treated round, open unf thread series
3a thread class right-hand 0.298" thread length pan no. 2 head style 32 thread quantity per inch black chromate cadmium surface treated unjf thread series
3a thread class right-hand 0.232" thread length flat countersunk head style 32 thread quantity per inch pellet 0.160 in. min 0.190 in. max head cadmium surface treated unjc thread series