ARP Hex Bolt Kits

2010–2025 Universal / Automotive Applications M10 x 1.25 Thread

Part #: 663-1007

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 top-grade materials and subjected to rigorous heat treatment, these bolts ensure durability and safety in demanding environments. Whether you're assembling engine components, securing chassis parts, or performing custom modifications, these bolts deliver consistent performance and peace of mind.

Ideal for enthusiasts and professionals alike, ARP's hex bolt kits are engineered to support your vehicle's performance upgrades or routine maintenance with confidence. Their robust construction helps support increased loads and stresses, making them suitable for both street and off-road use. With their black oxide finish, these bolts also offer corrosion resistance, ensuring longevity even in harsh conditions.

Key Features

ARP Hex Bolt Kits incorporate several advanced features that set them apart from standard hardware. These include:

• High-Strength Material: Made from 8740 chromoly steel, these fasteners are heat-treated to achieve a tensile strength of 180,000 psi, providing a substantial safety margin over typical Grade 8 hardware.
• Precision Threading: M10 x 1.25 metric threads ensure compatibility with a wide range of automotive components and accessories, facilitating secure and precise fastening.
• Flanged Hex Head: The flanged head design distributes load evenly and simplifies installation with a standard wrench or socket, reducing the risk of stripping or damage.
• Corrosion Resistance: The black oxide finish enhances durability by protecting against rust and corrosion, especially in marine or outdoor environments.
• Versatile Application: Suitable for use in engine assembly, suspension, chassis, and other critical areas requiring high-strength fasteners.
• Heat-Treated for Reliability: The specially heat-treated chromoly ensures consistent strength and toughness, even under high-stress conditions.
• Nominal Length: 50mm underhead length provides ample engagement and holding power for various assembly needs.

Construction & Design

The ARP Hex Bolt Kits are constructed from 8740 chromoly steel, a material renowned for its exceptional strength-to-weight ratio and toughness. The bolts undergo a proprietary heat treatment process that enhances their tensile strength to 180,000 psi, ensuring they can withstand high loads and vibrations without failure. The black oxide finish not only provides a sleek appearance but also adds a layer of corrosion resistance, making these bolts suitable for both indoor and outdoor applications.

The flanged hex head design allows for easy installation and removal using standard tools, while the precise M10 x 1.25 threads ensure compatibility with a broad range of components. The 50mm underhead length offers sufficient thread engagement for secure fastening, supporting the integrity of your assembly over time. These features combine to deliver a fastener that is both durable and reliable, capable of supporting your vehicle's performance and safety requirements.

Installation & Fitment

The ARP Hex Bolt Kits are designed for straightforward, bolt-on installation. Their standard M10 x 1.25 thread size makes them compatible with a wide array of automotive and marine components. No special tools or modifications are required for installation, and the bolts can be tightened to the specified torque values recommended for your application. Always follow manufacturer torque specifications to ensure proper fastening and safety.

• Simply thread the bolts into the designated holes and tighten with a standard wrench or socket.
• Ensure proper torque application to achieve optimal clamping force.
• No cutting, drilling, or special tuning is necessary.

What's Included

• Complete set of ARP Hex Bolts with black oxide finish
• High-strength chromoly construction for maximum durability
• Pre-measured length of 50mm underhead for versatile use

Ideal For

• Engine assembly and component mounting
• Chassis and suspension upgrades
• Marine and trailer hardware
• Any application requiring high-strength, reliable fasteners