Inquiry (采购产品): FAILURE TESTING WE HAVE A 1/4-20 X 1/2 FLANGED BUTTON SOCKET ALLOY STEEL. HEADS ARE POPPING OFF DURING INSTALL AND AFTER INSTALL. PARTS HAVE BEEN ZINC BLACK AND BAKED, AND ALSO HAVE A NYLOCK PATCH. WHAT WOULD COST BE AND HOW LONG WOULD IT TAKE TO DETERMINE PROBLEM? **** Hidden Message ***** MARY ZAMORA 60622 USA Company: LIBERTY FASTENER CO. Phone: 773-489-1499 Fax: 773-489-5250 E-mail: mary@libertyfastener.com **** Hidden Message ***** mary@libertyfastener.com