2a thread class right-hand 0.310" thread length knurled no. 1 head style 32 thread quantity per inch one hole threaded 4-40unc-2b by 0.230 deep located in center of head passivate surface treated unf thread series
2a thread class right-hand 0.625" thread length knurled no. 1 head style 20 thread quantity per inch threaded hole in head 0.250 inch deep, thread size 0.138-32 unc-2b unc thread series
Used on m1 tank. 2a thread class right-hand 1.620" thread length knurled no. 1 head style 16 thread quantity per inch cadmium surface treated unc thread series
3a thread class right-hand 1.531" thread length knurled no. 1 head style 0.063" hole diameter 24 thread quantity per inch navy special project hole in shank 0.133 in. dia, 1.187 in. from bearing surface of head to center of hole cadmium surface treated unf thread series
3a thread class right-hand 0.530" thread length knurled no. 1 head style 28 thread quantity per inch head undercut 0.060 in. deep by 0.550 in. min 0.600 in. max dia unf thread series
Used on an/alq-119. 2a thread class right-hand 0.380" thread length knurled no. 1 head style 16 thread quantity per inch passivate surface treated unc thread series
right-hand 2.436" thread length knurled no. 1 head style 16 thread quantity per inch threaded ball on end of threads with ball type swivel foot cadmium surface treated unc thread series
