These custom A286 socket head captive shoulder screws were manufactured domestically with full certs and FAIR using DFARS compliant A286 material hardened to minimum ultimate tensile strength of 1100 MPA.  The captive shoulder diameter was set to 1.64mm +0/-.05, 2-56 thread length at 3.78", and overall length under the head at 9.04mm +0/-0.76.  Parts were finished with Passivation per AMS2700, Method 1, Type 2, Class 4.