right-hand headless (setscrew) head style ffour holes 1.8 mm dia drilled 90.0 degrees apart through hex drive, two holes are located 2.0 mm from drive end 180.0 degrees apart, the other two are located 4.0 mm from drive end 180.0 degrees apart
2a thread class right-hand headless (setscrew) head style 32 thread quantity per inch navy special project parkized per F65A1A2 cage, 01526 unc thread series
3a thread class right-hand 0.302" thread length headless (setscrew) head style 32 thread quantity per inch passivate surface treated unjc thread series
3a thread class right-hand 0.302" thread length headless (setscrew) head style 32 thread quantity per inch passivate surface treated unjc thread series
3a thread class right-hand 0.614" thread length headless (setscrew) head style 28 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.188" thread length headless (setscrew) head style 56 thread quantity per inch navy special project passivate surface treated unf thread series