ARP Hex Bolt Kits

2010–2025 Universal / Automotive Applications M10 x 1.25

Part #: 663-1001

Overview

The ARP Hex Bolt Kits are premium-quality fasteners designed to provide reliable, high-strength connections for a wide range of automotive, marine, and trailer applications. Crafted from heat-treated 8740 chromoly steel, these bolts are engineered to withstand demanding conditions and deliver exceptional durability. Whether you're assembling engine components, securing chassis parts, or performing custom modifications, these bolts offer a superior alternative to standard hardware.

Ideal for enthusiasts and professionals alike, the ARP Hex Bolt Kits ensure that your installations are secure, safe, and built to last. The black oxide finish not only enhances corrosion resistance but also provides a sleek, professional appearance. With a tensile strength rated at 180,000 psi, these fasteners offer a significant safety margin over typical Grade 8 hardware, making them suitable for high-stress environments and performance applications.

Key Features

ARP Hex Bolt Kits are engineered with precision and quality in mind, featuring several key attributes that set them apart:

• High-Strength Material: Made from heat-treated 8740 chromoly steel, these bolts deliver exceptional tensile strength and durability for demanding applications.
• Corrosion Resistance: The black oxide finish provides enhanced protection against rust and corrosion, extending the lifespan of the fasteners.
• Precision Manufacturing: Manufactured to strict tolerances, ensuring consistent thread engagement and reliable performance.
• Flanged Hex Head: Designed for easy installation and removal with a flanged hex head that provides a secure grip and reduces the risk of stripping.
• Versatile Compatibility: Suitable for a wide range of vehicles and equipment, including cars, boats, and trailers, thanks to the M10 x 1.25 thread size and 20mm underhead length.
• Safety Margin: Rated at 180,000 psi tensile strength, offering a substantial safety margin over standard hardware for critical applications.
• Heat-Treated for Strength: The heat-treatment process enhances the mechanical properties, ensuring reliable performance under stress.

Construction & Design

The ARP Hex Bolt Kits are meticulously manufactured from 8740 chromoly steel, a material renowned for its high strength-to-weight ratio and toughness. The bolts undergo a precise heat-treatment process to achieve a tensile strength of 180,000 psi, ensuring they can handle high loads and vibrations without failure. The black oxide finish not only provides corrosion resistance but also reduces glare and adds a professional aesthetic.

The flanged hex head design allows for easy installation with standard tools, providing a secure grip that minimizes the risk of stripping or slipping during tightening. The 20mm underhead length ensures proper engagement and clamping force, making these bolts suitable for a variety of mounting and assembly tasks. Their manufacturing to strict tolerances guarantees consistent thread quality and fitment, reducing installation time and ensuring reliable performance.

Performance & Reliability

Designed for high-stress environments, these ARP fasteners deliver consistent performance and peace of mind. The superior material and manufacturing process mean they resist stretching, fatigue, and corrosion, even in harsh conditions. Whether used in engine assembly, suspension mounting, or structural components, these bolts help support your vehicle's integrity and safety.

Installation & Fitment

The ARP Hex Bolt Kits are designed for straightforward, bolt-on installation. They utilize standard M10 x 1.25 threads and a 20mm underhead length, compatible with a wide range of applications. No special tools or modifications are required, making them suitable for both professional mechanics and DIY enthusiasts. Always ensure proper torque specifications are followed during installation to maximize performance and safety.

• Easy to install with standard wrenches or sockets
• No cutting, drilling, or special modifications needed
• Suitable for high-performance and heavy-duty applications

What's Included

• Complete set of ARP M10 x 1.25 hex bolts with black oxide finish
• Installation instructions (if provided)

Ideal For

These ARP Hex Bolt Kits are perfect for automotive enthusiasts, race car builders, marine applications, and trailer manufacturers seeking high-strength, reliable fasteners. They are especially beneficial in scenarios where safety, durability, and corrosion resistance are critical, such as engine assembly, chassis mounting, or structural reinforcement.

Emissions Note

This product is designed for general use and does not impact vehicle emissions. It is suitable for applications where high-strength fasteners are required, and it complies with standard safety and quality expectations.