2a thread class right-hand 0.368" thread length pan no. 2 head style 40 thread quantity per inch passivate screw surface treated installed in head is 0-ring, silicone rubber, composition a unc thread series
2a thread class right-hand 0.670" thread length pan no. 2 head style 40 thread quantity per inch passivate screw surface treated installed in head on bearing surface is an o-ring, silicone rubber, composition a unc thread series
Used on mrap buffalo mk2a2. 3a thread class right-hand 0.438" thread length pan head style 32 thread quantity per inch zinc screw surface treated unf thread series