FHCS 5/16-18 x 5/8 Drive Flange Screw

The FHCS 5/16-18 x 5/8 Drive Flange Screw from Winters is a precision fastener engineered for securing wheel hubs and drivetrain components in high-performance and commercial vehicle applications. This 5/16-inch diameter, 18 threads-per-inch fastener delivers the holding power and corrosion resistance required in demanding automotive and off-road environments where vibration and exposure to the elements are constant concerns.

Manufactured from steel with a black oxide finish, this drive flange screw provides enhanced corrosion protection compared to bare steel, making it suitable for both dry and salt-air conditions. The 5/8-inch length and flathead cap socket design allow for flush mounting without protrusion, a critical feature when working with 5x5 inch hub assemblies where clearance and interference are design concerns. The black oxide coating also reduces light reflection, which can be beneficial in tactical or concealed mounting scenarios. Winters fasteners are manufactured to tight tolerances, ensuring consistent fit and reliable thread engagement across multiple installation and removal cycles.

This fastener is ideal for restoration work, performance vehicle assembly, and maintenance on Winters drive systems and compatible hub assemblies. Technicians and fabricators working with 5x5 hubs, differential lockers, or similar drivetrain components will find this screw essential for secure, long-lasting assembly. The individual unit format allows for replacement of worn or damaged fasteners without purchasing full kits, reducing waste and cost for targeted repairs.

At 0.02 lbs per screw, this fastener is lightweight yet substantial enough to handle the shear and tensile loads typical of wheel hub and drivetrain assembly work. Whether you're rebuilding a locker, servicing a performance differential, or assembling a custom drivetrain, having genuine Winters fasteners on hand ensures correct fitment and lasting reliability.