3/8-16 Stud 1.500 Long Broached

The ARP 3/8-16 Stud 1.500 Long Broached (part number AJ1.500-5B) is a precision fastener engineered for high-performance engine assembly and critical load applications. This broached stud delivers the thread accuracy and material strength demanded in competitive racing, engine rebuilds, and heavy-duty mechanical systems where fastener integrity is non-negotiable.

Constructed from premium chromoly steel with black oxide coating, this 3/8-16 stud offers superior tensile strength compared to standard hardware store fasteners. The broached design ensures consistent thread form and eliminates the stress concentrations common in rolled threads, reducing the risk of fatigue failure under cyclic loading. At 1.500 inches in length, this stud is sized for applications where precise engagement depth and clamping force are critical—particularly in cylinder head, intake manifold, and structural connection points. The black oxide finish provides corrosion resistance and maintains appearance through multiple assembly cycles.

This fastener is essential for engine builders, performance shops, and technicians assembling engines for dyno testing, track use, or restorations where OEM specification compliance is required. The 3/8-16 thread size with 1.500-inch length fits standard ARP stud applications across domestic and import platforms. Sold individually, allowing builders to source exact quantities needed without excess inventory. ARP studs are widely recognized in motorsports and professional engine assembly for delivering consistency that translates directly to reliable clamping load and long service life.