ARP Hex Bolt Kits

3/8˝-24 SAE Bolt Kit for Automotive, Marine, and Trailer Applications

Part #: 744-1250

Overview

The ARP Hex Bolt Kits are engineered for enthusiasts and professionals seeking high-quality, reliable fasteners for a wide range of automotive, marine, and trailer applications. Crafted from premium materials and designed with precision, these bolts provide a robust solution for securing critical components with confidence. Whether you're assembling a performance engine, upgrading your vehicle's hardware, or performing maintenance on a boat or trailer, these ARP bolts deliver strength, durability, and peace of mind.

Designed to meet or exceed industry standards, these fasteners are ideal for those who demand the best in quality and safety. With their superior tensile strength and heat-treated construction, ARP Hex Bolt Kits help support the integrity of your build, ensuring long-lasting performance under demanding conditions. Their black oxide finish not only adds corrosion resistance but also provides a sleek, professional appearance in your engine bay or equipment setup.

Key Features

ARP Hex Bolt Kits are built with precision and durability in mind, offering several key features that set them apart:

• High-Strength Material: Made from ARP's proprietary 8740 chromoly steel, these bolts boast a tensile strength of 180,000 psi, providing a significant safety margin over standard Grade 8 hardware.
• Heat Treatment: Fully heat-treated to optimize strength and toughness, ensuring reliable performance even in high-temperature environments.
• Corrosion Resistance: Finished with a black oxide coating that helps resist rust and corrosion, extending the lifespan of the fasteners.
• Precision Machining: Features a flanged 12-point head design for easy installation and removal, even in tight spaces.
• Nominal Size: 3/8 inch diameter with 24 threads per inch, suitable for a wide range of applications requiring SAE bolt standards.
• Underhead Length: 1.250 inches, providing ample engagement and holding power.
• Versatile Use: Perfect for securing engine components, mounting brackets, or trailer hardware where high strength and reliability are critical.
• Trusted Brand: ARP is renowned for manufacturing aerospace-quality fasteners trusted by professionals and enthusiasts worldwide.

Construction & Design

The ARP Hex Bolt Kits are constructed from premium 8740 chromoly steel, a material known for its exceptional strength-to-weight ratio and toughness. Each bolt undergoes a proprietary heat treatment process to achieve a tensile strength of 180,000 psi, ensuring they can withstand high-stress conditions without failure. The black oxide finish not only enhances corrosion resistance but also provides a sleek, professional look suitable for both performance and restoration projects.

The flanged 12-point head design allows for increased torque application and easier access in tight spaces, reducing the risk of stripping or rounding off the head. The precise machining and quality control standards ensure consistent thread engagement and fitment, making these bolts a reliable choice for demanding applications.

Performance & Reliability

While these bolts are not designed to provide specific horsepower or torque gains, their high tensile strength and durable construction help support the structural integrity of your vehicle or equipment. They are ideal for applications where safety, reliability, and long-term performance are paramount. Whether used in engine assembly, mounting hardware, or trailer connections, ARP bolts help ensure your components stay secure under vibration, heat, and stress.

Installation & Fitment

Installing the ARP Hex Bolt Kits is straightforward and similar to standard hardware. These bolts are designed to bolt directly into compatible threaded holes without the need for modifications. Their precise dimensions and high-quality machining ensure a proper fit, and they can be torqued to manufacturer specifications or your project requirements. No special tools or procedures are necessary, making them suitable for both professional mechanics and DIY enthusiasts.

• Simply thread the bolt into the corresponding nut or threaded hole.
• Use a standard wrench or socket to tighten to the recommended torque.
• Ensure proper lubrication if specified by your application to achieve optimal clamping force.

Always follow the specific torque specifications for your application to ensure safety and performance. These bolts are designed for easy installation and removal, making maintenance and future upgrades hassle-free.

What's Included

• One ARP Hex Bolt Kit with 3/8˝-24 SAE bolts
• Complete hardware for secure fastening
• Instruction sheet (if provided by ARP)

Ideal For

• Engine assembly and rebuilds
• High-performance automotive projects
• Marine engine and hardware applications
• Trailer and equipment mounting
• Any application requiring high-strength, reliable fasteners

Emissions Note

These ARP Hex Bolt Kits are designed for general use and do not carry specific emissions certifications. Always verify compatibility with your local regulations before use in emissions-critical applications.