Flange Bolt With Hole for Safety Wire

Featuring a flanged head with a central through-hole, this fastener is specifically designed for high-strength connections requiring safety wire or cotter pin installation. This specialized head construction is commonly used in automotive hubs, drive shafts, and suspension systems subjected to severe vibration and alternating loads. The physical locking mechanism prevents loosening or detachment during long-term operation.

The manufacturing process combines cold heading with precision machining, focusing on ensuring the flatness of the flange bearing surface and the coaxiality between the thread and the head to guarantee uniform load distribution during assembly. The lateral through-hole is machined with strict control over diameter tolerance and edge chamfering to prevent sharp edges from damaging the locking wire, while maintaining shank straightness to meet stringent assembly clearance requirements.

Leveraging a combination of multi-station cold heading machines and CNC lathes, Weide Auto Parts efficiently achieves mass production of these special-shaped fasteners. Key dimensions undergo 100% inspection using concentricity gauges and vision screening machines. Our factory is IATF 16949 certified, offering one-stop delivery capabilities from material heat treatment to surface anti-corrosion processing. We provide customized solutions compliant with OEM standards based on your drawing specifications.