11mm x 2.0 to 7/16-20 Stud 7.325 OAL

The 11mm x 2.0 to 7/16-20 Stud by ARP is a precision threaded adapter engineered for tactical and industrial applications requiring reliable fastening solutions. This stud assembly bridges two distinct thread standards—11mm x 2.0 metric and 7/16-20 UNC—making it essential for shooters, armorers, and equipment specialists who work with mixed-standard components or require retrofit compatibility across different platforms. Whether you're mounting optics, accessories, or securing critical assembly points on AR-pattern rifles or other systems, this adapter eliminates the need for costly component replacement or improvised solutions.

Manufactured by ARP (Applied Racing Products), a company renowned for precision fastening in high-stress environments, this stud features a 7.325-inch overall length and weighs just 0.26 pounds, making it lightweight yet rigid enough for duty-grade applications. The dual-thread design ensures secure engagement on both ends: the 11mm x 2.0 metric side accommodates European or precision-manufactured components, while the 7/16-20 UNC end interfaces with standard American-spec threaded holes and accessories. This configuration provides repeatable, zero-creep assembly without the need for thread-locking compounds, though applications in harsh environments may benefit from Loctite Blue for added insurance.

Law enforcement armorers, military technicians, and competition shooters commonly specify this stud for upper receiver assemblies, rail system installations, and precision optic mounts where dimensional accuracy is non-negotiable. The 7.325-inch length accommodates standard receiver geometry without binding or clearance issues. Installation requires hand-tightening or low-torque wrench work; over-torquing is not recommended and may compromise the adapter's integrity. Stock this adapter if you maintain equipment across NATO-standard and domestic American platforms, or if you source components from international suppliers.