10mm x 1.25 12pt Nut (1) Black Oxide

The 10mm x 1.25 12pt nut in black oxide finish is a precision fastener engineered for high-stress applications where reliability under load is non-negotiable. Purpose-built for tactical equipment assembly, firearms components, and military-grade machinery, this ARP fastener delivers the secure clamping force required in demanding environments. Whether you're building a custom rifle platform, assembling body armor suspension systems, or maintaining critical gear infrastructure, this single nut provides the foundation for consistent, repeatable performance across repeated duty cycles.

Manufactured from chromoly steel and finished in black oxide coating, the 10mm x 1.25 12pt nut combines superior tensile strength with corrosion resistance essential for field operations. The 12-point head geometry allows engagement from multiple angles, reducing fumbling during assembly or maintenance in low-light conditions—a critical advantage during equipment repair in austere environments. Black oxide treatment provides both aesthetic uniformity across tactical builds and protective rust inhibition without adding measurable weight. The 1.25mm thread pitch ensures precise engagement and eliminates the thread slippage that can occur with looser tolerances under vibration or recoil cycling.

This fastener is ideal for operators and armorers who demand OEM-quality components for custom builds and field-level repairs. Law enforcement equipment specialists and military armorers rely on ARP fasteners for their batch consistency and resistance to fatigue failure in high-cycle applications. Installation is straightforward: hand-thread onto a 10mm bolt or stud, then torque to manufacturer specification using a wrench that engages the 12-point head. Keep spare 10mm x 1.25 nuts in your maintenance kit to address loose components during extended field operations—a single fastener costs pennies but prevents equipment failure when it matters most.