These are custom machine double end studs used for aerospace applications and in our case specifically for helicopter repair. 17-4 material is used and the 10-32 UNJF-3A thread is cut after the drilled hole process and machined operations are completed. A 3/32 hex recess with a .225" deep cavity is created on one side using a drill and broach approach. The drilled hole on the single threaded side measures .035 in diameter.
