ARP Hex Bolt Kits

3/8˝-16 SAE Bolt Kit by ARP

Part #: 651-1250

Overview

The ARP Hex Bolt Kits are premium-quality fasteners designed for automotive, marine, and trailer applications where strength, durability, and reliability are critical. Crafted from high-grade chromoly steel, these bolts are engineered to withstand demanding conditions and provide a secure, long-lasting connection. Whether you're assembling a high-performance engine, securing trailer components, or performing custom modifications, these ARP bolts deliver exceptional performance and peace of mind.

Ideal for enthusiasts and professionals alike, the ARP Hex Bolt Kits offer a significant upgrade over standard hardware. Their heat-treated construction ensures they maintain their strength and integrity under stress, making them suitable for both street and off-road use. With their black oxide finish, these fasteners also provide corrosion resistance, helping to preserve their appearance and functionality over time.

Key Features

ARP Hex Bolt Kits are built with precision and quality to meet the highest standards of performance and safety. Here are some of the key features that make these bolts a top choice for your projects:

• High-Strength Material: Made from 8740 chromoly steel, these bolts offer superior tensile strength rated at 180,000 psi, providing a substantial safety margin over standard Grade 8 hardware.
• Heat-Treated for Durability: The bolts undergo a specialized heat-treating process to enhance their strength, toughness, and resistance to fatigue and stress.
• Corrosion Resistance: Finished with a black oxide coating, these fasteners resist rust and corrosion, ensuring longevity in various environments.
• Precision Manufacturing: Manufactured to strict specifications, ensuring consistent thread engagement and proper fitment across applications.
• Versatile Application: Suitable for use on cars, boats, trailers, and other machinery requiring reliable, high-strength fasteners.
• Secure Flanged Hex Head: The flanged hex head design provides a larger bearing surface for better load distribution and easier tightening with standard tools.
• Nominal Thread Size: 5/16 in.-18, compatible with a wide range of components and assemblies.
• Underhead Length: 1.250 inches, offering sufficient thread engagement for secure fastening.

Construction & Design

The ARP Hex Bolt Kits feature a robust design focused on strength and reliability. Crafted from 8740 chromoly steel, a material renowned for its high tensile strength and toughness, these bolts are heat-treated to optimize their mechanical properties. The black oxide finish not only enhances corrosion resistance but also provides a sleek, professional appearance. The flanged hex head allows for easy installation and removal with standard tools, while the precise threading ensures a secure fit and optimal load distribution. These design choices make the ARP bolts suitable for high-stress environments where safety and durability are paramount.

Installation & Fitment

Installing the ARP Hex Bolt Kits is straightforward and requires no special tools beyond standard wrenches or sockets. These bolts are designed to thread directly into compatible threaded holes, providing a secure and tight fit. No cutting, drilling, or additional modifications are necessary for most applications. Proper torque specifications should be followed to ensure optimal clamping force and safety. Always verify thread compatibility and cleanliness of mating surfaces before installation.

• Simply thread the bolts into the designated holes and tighten to the manufacturer’s recommended torque.
• Ensure that the threads are clean and free of debris for proper engagement.
• Use a calibrated torque wrench to achieve the correct clamping force and prevent over-tightening.

What's Included

• Complete set of ARP Hex Bolts with black oxide finish
• All necessary hardware for installation
• Instruction sheet (if applicable)

Ideal For

• High-performance automotive builds
• Marine and boat trailer assemblies
• Trailer and equipment fastening
• Custom fabrication projects requiring reliable, high-strength fasteners