7/16 Neckdown Stud - 4.750 Long 3/8 Head

The ARP 7/16 Neckdown Stud - 4.750 Long 3/8 Head (MPN: APJ4.750-1SB) is a precision-engineered fastener designed for high-performance engine and drivetrain assembly. This broached chromoly stud combines dual thread specifications—7/16-14 and 3/8-24—to accommodate multiple component interfaces in a single fastener, reducing inventory complexity and improving assembly efficiency. The black oxide finish provides corrosion resistance suitable for both street and competition environments.

At 4.75 inches in length with a 3/8-inch head diameter, this stud is engineered for applications requiring precise engagement and load distribution across dissimilar threaded ports. The broached design ensures repeatable, concentric thread geometry without run-out, critical for applications where vibration dampening and structural integrity are paramount. Chromoly construction delivers superior tensile strength and fatigue resistance compared to standard steel fasteners, making it suitable for high-rpm and high-load scenarios common in performance automotive and industrial assembly.

This fastener serves engine builders, transmission specialists, and fabricators who require dual-thread studs for custom or OEM-equivalent assembly work. The combination of 7/16-14 and 3/8-24 threading allows single-piece solutions where standard studs would necessitate shims, adapters, or compromise fits. Whether installing performance cylinder head packages, assembling custom bellhousing plates, or servicing transmission mounting points, the ARP neckdown stud delivers the precision fit and holding strength that professional-grade assembly demands.

ARP fasteners are recognized throughout the performance automotive and motorsports industry for manufacturing consistency and material quality. This stud is sold individually, allowing builders to purchase only the quantity required for their specific project without excess inventory or waste.