ARP 12pt Hardware Kit

2010–2025 Universal Fit for Automotive, Marine, and Trailer Applications

Part #: 641-1250

Overview

The ARP 12pt Hardware Kit is a premium-quality fastener solution designed for automotive enthusiasts, builders, and professionals who demand strength, durability, and reliability in their projects. Whether you're assembling a high-performance engine, securing trailer components, or outfitting marine equipment, these ARP chromoly bolts provide a superior fastening option that exceeds standard hardware specifications.

Constructed from heat-treated 8740 chromoly steel, these bolts are engineered to withstand demanding conditions and provide a substantial safety margin. Their black oxide finish not only enhances corrosion resistance but also offers a sleek, professional appearance. With a tensile strength rated at 180,000 psi, these fasteners deliver exceptional strength and reliability, making them ideal for critical applications where safety and performance are paramount.

Key Features

ARP's 12pt hardware kit offers a range of features tailored for high-performance and heavy-duty use:

• Manufactured from heat-treated 8740 chromoly steel for maximum strength and durability.
• Black oxide finish provides corrosion resistance and a professional look.
• Nominally rated at 180,000 psi tensile strength, offering a significant safety margin over standard Grade 8 hardware.
• Designed with a 12-point head for enhanced grip and ease of installation with standard tools.
• Available in a wide range of thread sizes, head styles, and configurations to suit various applications.
• Ideal for automotive engine assembly, trailer construction, marine equipment, and other demanding environments.
• Precision-machined to strict tolerances to ensure proper fitment and reliable performance.
• Heat-treated for optimal hardness and strength, ensuring longevity and resistance to fatigue.
• Suitable for use in high-stress applications where safety and performance are critical.

Construction & Design

The ARP 12pt hardware kit is crafted from premium 8740 chromoly steel, a material renowned for its exceptional strength-to-weight ratio and toughness. The fasteners undergo a proprietary heat-treatment process that enhances their tensile strength and fatigue resistance, ensuring they can withstand the rigors of high-performance use. The black oxide finish not only provides corrosion protection but also reduces glare and enhances the visual appeal of the hardware.

The 12-point head design allows for better grip and easier installation or removal in tight spaces, reducing the risk of stripping or cam-out. The precision machining ensures a perfect fit with ARP's own tools or standard sockets, providing confidence during assembly and maintenance. These features combine to produce a fastener that is both robust and user-friendly, suitable for demanding automotive and industrial applications.

Installation & Fitment

The ARP 12pt hardware kit is designed for straightforward, bolt-on installation. Its precise machining and standardized thread sizes mean it fits a wide range of applications without the need for modifications. No special tools beyond standard sockets and wrenches are required, and the 12-point head design facilitates easier access in tight or hard-to-reach areas. Always follow ARP's recommended torque specifications to ensure optimal clamping force and safety.

• Easy to install with standard hand tools.
• No cutting, drilling, or special modifications required.
• Suitable for use in automotive, marine, trailer, and industrial applications.

What's Included

• Complete set of ARP 12pt chromoly bolts in the specified thread size and length.
• All necessary hardware components for installation.
• Instruction sheet with torque specifications and installation tips.

Ideal For

• Automotive engine builders and restorers seeking high-strength fasteners.
• Trailer manufacturers and repair professionals requiring reliable hardware.
• Marine applications where corrosion resistance and strength are critical.
• Heavy-duty industrial equipment assembly.