Home > Construction > Custom Hex Flange Bolts - Grade 5 Zinc Plated

We had slightly over 100,000 pieces of these serrated custom hex flange bolts manufactured for our construction customer to their drawing specifications and tolerances.  They were manufactured per SAE J429 Grade 5 requirements with Zinc Clear finish per ASTM B633.  Flange OD was set to .68" and across the flats dimension to .489-.500".  The screws were fully threaded with 5/16-18 2a thread at 2-1/2" in length.  Full certs were provided including 3rd party testing for proof load, hardness, and chemical composition requirements.