7/16 Neckdown Stud - 2.250 Long 3/8 Head

The ARP 7/16 Neckdown Stud – 2.250 Long with 3/8 Head is a precision fastener engineered for high-performance engine assembly and critical fastening applications. This neckdown stud features dual-thread design with 3/8-24 and 7/16-14 thread specifications, allowing it to serve as both a stud and a bolt in applications requiring mixed fastener configurations. Manufactured from chromoly steel with black oxide finish, this ARP stud delivers superior strength and corrosion resistance essential for demanding mechanical environments.

At 2.25 inches in length with a 3/8-inch head diameter, this neckdown stud is sized for manifold flanges, cylinder head applications, and other engine compartment fastening points where space constraints and load requirements demand precision engineering. The chromoly construction provides the tensile strength necessary to handle thermal cycling and vibration without loosening or fatigue failure. Black oxide coating protects against oxidation while maintaining thread integrity and allowing proper torque specifications to be met without galling.

This stud serves engine builders, performance automotive technicians, and motorsport professionals who require fasteners rated for high-RPM and high-temperature applications. The dual-thread design eliminates the need for separate studs and bolts in mixed fastening scenarios, reducing inventory complexity and installation time. Each stud is sold individually, allowing builders to purchase exact quantities for specific applications without waste.

ARP fasteners are recognized throughout the automotive and marine performance industry for consistency and reliability under extreme conditions. The APJ2.250-1SB designation identifies this specific configuration, ensuring you receive the correct dual-thread geometry and head size for your engine assembly specifications.