1/4-20 12pt. Nuts (10)

ARP 1/4-20 12pt. Nuts (10) are precision-engineered fasteners designed for critical engine builds, cylinder head assembly, and high-vibration applications where standard hardware fails. Whether you're rebuilding a performance engine, upgrading turbo manifold bolts, or securing intake manifolds on a modified platform, these 12-point nuts deliver the reliability that separates a weekend project from a race-proven build. The 10-pack quantity makes them ideal for restocking your shop or completing a full engine refresh without over-buying bulk inventory.

The 1/4-20 thread pitch pairs seamlessly with ARP stud kits and bolt sets commonly found in cylinder head, main, and rocker cover applications. Twelve-point design provides superior grip geometry compared to six-point heads, reducing fastener rounding and slip-off during installation—critical when working with 8740 chromoly studs under high clamping loads. ARP's quality control ensures thread concentricity and hardness specs that prevent galling, stripping, and premature loosening in environments subject to thermal cycling and vibration. These nuts work in tandem with ARP bolts and studs to maintain clamp load integrity across multiple heat cycles, essential for boost applications and turbo setups.

Serious engine builders, fabricators, and enthusiasts rely on ARP fasteners for LS, small-block Chevy, big-block Ford, and import performance platforms where stock fasteners compromise reliability. The 1/4-20 thread size fits a wide range of engine bay applications—from fuel rail bolts and alternator brackets to manifold flanges and accessory mounting. Installation with ARP Ultra-Torque or equivalent anti-seize compound prevents corrosion and ensures repeatable torque specs across rebuild cycles. Keep a 10-pack on hand for emergency fastener replacement or as insurance during engine teardown when original hardware shows wear or damage.