1/2in-20 Wheel Studs .685in Knurl

The 1/2in-20 wheel studs .685in knurl from MOROSO are engineered for builders and enthusiasts who demand reliability in high-performance and modified vehicle applications. Wheel studs are the critical fastening interface between your wheel hub and rotor assembly—they bear all lateral and longitudinal forces during acceleration, braking, and cornering. Upgrading to quality aftermarket studs becomes essential when installing custom wheels, upgrading brake systems, or building modified engines where factory hardware may not meet performance demands or clearance requirements.

These studs feature a 1/2-inch diameter with 20 threads per inch (1/2in-20) and a 0.685-inch knurl diameter that provides secure engagement with wheel center bores. The knurl design—a series of fine grooves rolled into the shaft—mechanically locks into the wheel hub casting, preventing rotational slippage under extreme loads. Manufactured from hardened steel and finished in black oxide for corrosion resistance, the studs measure 3 inches in length, compatible with most passenger and light-truck applications. This specification delivers the clamping force and longevity required for sustained performance without thread stripping or seizing.

Mechanics and custom builders rely on MOROSO studs for street rods, circle-track vehicles, and street-performance builds where factory studs prove insufficient. They're ideal for applications using custom hubs, large-diameter wheels, or aggressive braking setups that amplify clamping stress. Installation is straightforward: press or screw the studs into the hub (depending on application design), then torque lug nuts to manufacturer specifications using a calibrated wrench. Verify stud compatibility with your specific hub before purchase, as some applications may require different lengths or thread pitches.