3.250 Broached Stud - 1/2-13 & 3/8-24

The 3.250 Broached Stud - 1/2-13 & 3/8-24 from ARP is a precision fastener designed for high-performance engine builders and serious mechanical work that requires dual-threaded capability. This broached stud is essential for applications where a single fastener must accommodate two different thread patterns, making it ideal for custom engine assembly and specialized automotive construction.

Manufactured by ARP, a leader in fastener engineering, this stud features a 1/2-13 thread on one end and a 3/8-24 thread on the other, with an overall length of 3.250 inches. The broached construction ensures precise thread form and minimal runout, which is critical for achieving proper clamping force and preventing loosening under vibration and thermal cycling.

Professional engine builders, transmission specialists, and automotive enthusiasts tackling custom engine swaps will find this fastener indispensable for applications requiring mixed thread pitch solutions in tight spaces. The stud's reliable design and ARP's manufacturing standards guarantee consistent thread engagement and dimensional accuracy, making it a trusted choice for demanding builds.