ARP Broached Stud Length Thread Engine Hardware

ARP broached studs are precision-made engine fasteners for engine builders and enthusiasts who want a stronger, more reliable alternative to standard bolts. Each stud has a hex-broached end, a recessed hex socket in the tip. You can thread the stud in with a standard Allen wrench or hex tool and snug it down before the final nut is torqued. These studs suit head, main, exhaust, intake and other accessory applications. They are also sold under the names broached engine studs, hex-broached studs and Allen-head studs.

Key Features:

• Hex-broached installation end: Lets you install and remove the stud with a hex tool, without damaging the threads.
• High-strength ARP materials: ARP makes its fasteners from proprietary alloys that are engineered for strength, fatigue resistance and durability under heat and load.
• Studs instead of bolts: A stud lets you apply clamping load with a nut, which helps with accurate torque and consistent clamping force. It also avoids twisting the fastener in the block or head during tightening.
• Made in the USA: ARP builds these fasteners in the United States to tight quality standards.
• Many thread sizes and lengths: The product line offers many thread sizes, lengths and configurations. Check the individual part number for its exact specifications and whether nuts and washers are included.

ARP (Automotive Racing Products) was founded in the early 1970s by Gary Holzapfel, who drew on aerospace fastener experience. The company is known for high-performance fasteners used in racing and street engines. Use broached studs for engine assembly, rebuilds and performance upgrades where fastener reliability matters.