3a thread class right-hand headless (setscrew) head style 24 thread quantity per inch set screw, socket, self-locking, half dog point non-metallic locking patch element iaw mil-f-18240; prevailing zinc fastener surface treated unc thread series
Used on stryker. 3a thread class right-hand 0.793" thread length headless (setscrew) head style 28 thread quantity per inch setscrew, heaxagon, headless cadmium surface treated unf thread series