ARP 12pt Hardware Kit

3/8˝-16 SAE Bolt Kit for Automotive, Marine, and Trailer Applications

Part #: 642-4250

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. Whether you're assembling a high-performance engine, securing trailer components, or performing custom modifications, these ARP chromoly bolts provide the confidence and peace of mind you need for demanding applications.

Constructed from specially heat-treated 8740 chromoly steel, these bolts are engineered to withstand the rigors of high-stress environments. Their black oxide finish not only enhances corrosion resistance but also gives a sleek, professional appearance. Rated at an impressive 180,000 psi tensile strength, these fasteners offer a substantial safety margin over standard Grade 8 hardware, making them ideal for critical fastening points where strength and safety are paramount.

Key Features

Designed for versatility and performance, the ARP 12pt Hardware Kit offers several key features that set it apart from standard fasteners:

• High-Strength Material: Made from ARP's proprietary 8740 chromoly steel, these bolts deliver exceptional tensile strength and durability for demanding applications.
• Heat-Treated for Reliability: Precision heat-treated to achieve optimal hardness and toughness, ensuring long-lasting performance under stress.
• Black Oxide Finish: Provides corrosion resistance and a professional appearance, suitable for both street and racing environments.
• Wide Range of Sizes and Styles: Available in various thread sizes, head styles, and lengths to accommodate a broad spectrum of installation needs.
• Engineered for Safety: Rated at 180,000 psi tensile strength, offering a significant safety margin over standard hardware.
• Precision Manufacturing: Manufactured to strict quality standards for consistent fit and performance.
• Versatile Use: Suitable for automotive, boat, trailer, and other high-stress fastening applications.

Construction & Design

The ARP 12pt Hardware Kit features fasteners crafted from ARP's renowned 8740 chromoly steel, a material known for its exceptional strength-to-weight ratio and toughness. Each bolt undergoes a proprietary heat-treating process to maximize tensile strength and fatigue resistance. The black oxide coating not only enhances corrosion resistance but also reduces glare and provides a clean, finished look.

The 12-point (12pt) head design allows for better engagement with tools, reducing the risk of stripping during installation or removal. This design is especially beneficial in tight spaces where access is limited. The bolts are precision-machined to tight tolerances, ensuring a perfect fit and reliable performance in critical applications.

Performance & Safety

These ARP fasteners are engineered to provide a substantial safety margin and consistent performance under high loads. Their high tensile strength ensures that they can support increased stress levels, making them suitable for high-performance builds, racing, or heavy-duty applications. The durable construction helps prevent thread stripping, stretching, or failure, even under extreme conditions.

Installation & Fitment

The ARP 12pt Hardware Kit is designed for straightforward, bolt-on installation. These fasteners are compatible with standard SAE 3/8˝-16 threaded components and can be used in a variety of automotive and industrial applications. No special tools beyond standard wrenches or sockets are required. Proper torque specifications should be followed to ensure optimal clamping force and safety. Always consult your vehicle or equipment manufacturer’s guidelines for specific torque values.

• Easy to install with common hand tools
• No cutting, drilling, or modifications required
• Suitable for high-stress fastening points

What's Included

• Complete set of 3/8˝-16 SAE bolts in various lengths and head styles (as specified by the kit)
• All necessary hardware for installation
• Instruction sheet (if applicable)

Ideal For

• Automotive enthusiasts performing engine builds or chassis assembly
• Trailer and boat trailer assembly and repair
• High-stress industrial or mechanical applications
• Professionals requiring reliable, high-strength fasteners

Emissions Note

This product is designed for use in non-emissions-critical applications. Please verify local regulations before use in vehicles subject to emissions testing or certification.