We supplied our aerospace customer 200 pieces of these custom 17-4PH double shoulder bolts.  17-4 PH material heat treated to condition H1100 was used for the domestic production of these parts, with resulting hardness between 34 and 36 HRC.  Passivation per QQ-P-35 was performed to complete the production process.  The hex socket drive was cold headed and the 5/16-24 thread rolled per customer requirements.  Full certs were provided with the shipments.
 
