Used on mrap - cougar. 2a thread class left-hand 0.497" thread length flat countersunk head style 20 thread quantity per inch passivate screw surface treated cres comp 316 only unc thread series
2a thread class left-hand 0.167" thread length flat countersunk head style 32 thread quantity per inch passivate screw surface treated cres comp 316 only unc thread series