ARP Hex Bolt Kits

2010–2025 Universal / Automotive Applications M10 x 1.25

Part #: 663-1011

Overview

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

Ideal for enthusiasts and professionals alike, these bolts are perfect for those seeking to enhance the safety margin and longevity of their vehicle or equipment. The M10 x 1.25 thread size ensures compatibility with numerous applications, and the flanged hex head design allows for easy installation and removal with standard tools. With ARP's reputation for quality and precision, you can trust these fasteners to deliver consistent performance under stress and heat.

Key Features

ARP Hex Bolt Kits incorporate advanced materials and manufacturing techniques to ensure maximum strength and reliability. The fasteners are made from 8740 chromoly steel, a high-strength alloy known for its excellent toughness and fatigue resistance. Each bolt is meticulously heat-treated to achieve a tensile strength rating of 180,000 psi, providing a significant safety margin over typical Grade 8 hardware.

• Premium Material: 8740 chromoly steel for superior strength and durability.
• Heat Treatment: Carefully heat-treated to ensure consistent tensile strength and toughness.
• Finish: Black oxide coating offers corrosion resistance and a sleek appearance.
• Design: Flanged hex head for secure grip and easy installation with standard tools.
• Thread Compatibility: M10 x 1.25 metric thread standard suitable for various applications.
• Application Versatility: Suitable for automotive, marine, trailer, and industrial use.
• Safety Margin: Rated at 180,000 psi tensile strength for added safety and reliability.
• Precision Manufacturing: Manufactured to strict quality standards for consistent performance.
• Corrosion Resistance: Black oxide finish helps protect against rust and corrosion.

Construction & Design

The ARP Hex Bolt Kits are constructed from high-grade 8740 chromoly steel, a material renowned for its exceptional strength-to-weight ratio and toughness. Each bolt undergoes a precise heat-treating process to achieve a tensile strength of 180,000 psi, ensuring they can handle high-stress environments without failure. The flanged hex head design provides a larger bearing surface, reducing the risk of head stripping and ensuring a secure fit during installation and operation.

The black oxide finish not only enhances the aesthetic appeal but also offers a layer of corrosion resistance, making these bolts suitable for both indoor and outdoor applications. The M10 x 1.25 thread size is a common standard, allowing these fasteners to be used across a broad spectrum of vehicles and equipment, providing versatility and peace of mind for your projects.

Performance & Reliability

Designed for demanding applications, these ARP bolts deliver consistent performance under high torque and heat conditions. Their high tensile strength ensures that they can support critical components and assemblies, reducing the risk of fastener failure. The precision manufacturing process guarantees a perfect fit and reliable clamping force, which is essential for maintaining the integrity of your vehicle or equipment.

Installation & Fitment

Installing the ARP Hex Bolt Kits is straightforward, thanks to their standard metric thread size and flanged hex head design. They are intended as direct replacements for OEM or other high-quality fasteners, requiring no special tools beyond standard wrenches or sockets. No cutting, drilling, or special tuning is necessary, making them an excellent choice for both professional mechanics and DIY enthusiasts.

• Simply thread into existing holes or threaded components.
• Use standard tools for installation and removal.
• No additional modifications or adjustments required.

What's Included

• Complete set of ARP M10 x 1.25 hex bolts
• High-quality hardware designed for durability and performance

Ideal For

• Engine assembly and component mounting
• Chassis and suspension work
• Marine and trailer applications requiring high-strength fasteners
• Custom automotive modifications and repairs

Emissions Note

These fasteners are intended for use in non-emissions-critical applications. Always verify compatibility with your specific vehicle or equipment before installation. ARP fasteners are designed to meet or exceed industry standards for strength and durability but do not carry specific emissions certifications.