ARP Hex Bolt Kits

5/16˝-18 SAE Bolt Kit for Automotive, Marine, and Trailer Applications

Part #: 651-1000

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 top-grade materials and engineered for durability, these bolts are ideal for enthusiasts and professionals seeking to ensure safety and performance in their projects. Whether you're assembling engine components, securing trailer parts, or performing custom modifications, these ARP bolts deliver consistent, dependable performance.

Constructed with precision and attention to detail, ARP's hex bolt kits are engineered to meet or exceed industry standards. They are perfect for those who demand the best in strength, reliability, and corrosion resistance. With their black oxide finish, these fasteners not only perform well but also add a sleek, professional look to your build.

Key Features

ARP Hex Bolt Kits are built with several key features that set them apart from standard hardware:

• High-Strength Material: Made from 8740 chromoly steel, these bolts offer exceptional tensile strength, rated at 180,000 psi, providing a significant safety margin over typical Grade 8 hardware.
• Heat Treatment: Carefully heat-treated to optimize strength and durability, ensuring the fasteners can withstand demanding conditions without failure.
• Corrosion Resistance: Finished with a black oxide coating that helps protect against rust and corrosion, extending the lifespan of the fasteners in harsh environments.
• Precision Manufacturing: Manufactured with tight tolerances to ensure proper fitment and consistent performance across every kit.
• Versatile Application: Suitable for use in automotive engines, marine equipment, trailers, and other heavy-duty fastening needs.
• Secure Thread Engagement: Designed with a 5/16 in.-18 thread size and flanged hex head for easy installation and removal with standard tools.
• Optimal Underhead Length: 1.000 inch length provides ample thread engagement for secure fastening without over-tightening.

Construction & Design

The ARP Hex Bolt Kits feature a robust design utilizing high-quality 8740 chromoly steel, renowned for its strength and toughness. The heat treatment process enhances the material's properties, ensuring the bolts can handle high-stress environments. The black oxide finish not only provides corrosion resistance but also reduces glare and adds a professional appearance. The flanged hex head design allows for easy wrench engagement, providing maximum torque transfer and minimizing the risk of stripping or slipping during installation.

Each bolt is manufactured with precision to ensure proper thread engagement and consistent quality. The 5/16 in.-18 thread size is a common standard, making these bolts compatible with a wide range of components and assemblies. The 1-inch underhead length strikes a balance between strength and clearance, making these bolts suitable for various applications where reliable fastening is critical.

Performance & Reliability

Designed for demanding applications, these ARP bolts offer a substantial safety margin with their high tensile strength. They are ideal for use in high-performance engines, heavy-duty trailers, and marine environments where strength and corrosion resistance are paramount. The heat-treated chromoly construction ensures longevity and consistent performance, even under vibration, heat, and stress. These bolts help support the integrity of your assembly, reducing the risk of fastener failure and ensuring peace of mind during operation.

Installation & Fitment

The ARP Hex Bolt Kits are designed for straightforward, bolt-on installation. They utilize standard 5/16 in.-18 threads and a flanged hex head, compatible with common tools. No special modifications or tuning are required for installation. Simply thread the bolts into the corresponding threaded holes, tighten to the specified torque, and enjoy a secure, high-strength fastening solution. Always follow manufacturer torque specifications to ensure optimal performance and safety.

• Easy to install with standard wrenches or sockets
• No cutting, drilling, or special tools required
• Suitable for a wide range of automotive, marine, and trailer applications

What's Included

• Complete set of ARP Hex Bolts in the specified size and quantity
• All necessary hardware for installation
• Instruction sheet for proper torque and installation guidelines

Ideal For

• Automotive enthusiasts performing engine builds or repairs
• Marine applications requiring corrosion-resistant fasteners
• Trailer assembly and maintenance
• Heavy-duty industrial or custom fabrication projects

Emissions Note

This product is designed for off-road, racing, or industrial use only and may not be legal for use on public roads in certain jurisdictions. Please check local regulations before installation.