1/2-20 x 1.750 12pt Bolt Kit (5) Black Oxide

The ARP 1/2-20 x 1.750 12pt Bolt Kit (5) Black Oxide is a precision fastener set engineered for high-strength applications requiring reliable clamping force and corrosion resistance. This kit contains five chromoly bolts finished in black oxide, designed to handle demanding assembly and reassembly cycles in tactical equipment, vehicle platforms, optics mounting systems, and other load-critical mechanical assemblies where thread integrity and shear strength cannot be compromised.

Each bolt features a 1/2-20 thread pitch with a 1.75-inch length and a 9/16-inch 12-point head. The 12-point head configuration provides multiple contact surfaces that reduce rounding risk during installation and removal—a critical advantage when working in field conditions or with worn socket sets. Chromoly construction delivers superior tensile strength compared to mild steel, essential for components experiencing vibration or dynamic loads. Black oxide coating provides corrosion resistance suitable for tactical and outdoor environments while maintaining a low-profile appearance. The 0.77-pound weight per kit reflects the substantial material density required for this specification.

Operators and armurers rely on ARP fasteners for critical rebuild and maintenance tasks where bolt failure creates mission risk. This kit is applicable across platform-agnostic applications—mounting rails, receiver modifications, stock attachment systems, and accessory interfaces that demand repeatable torque specs and zero stretch during use. The five-piece count supports multiple assembly points or provides spares for field inventory.

ARP fasteners are recognized across the tactical and motorsports industries for meeting stringent performance standards. This 1/2-20 configuration is compatible with standard SAE-compliant tools and torque values, eliminating the need for specialized equipment or reference tables during installation.