Value Collection 451181BR Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION 451181BR is a Grade 8 steel hex head cap screw in the 1-8 UNC thread size with a 7-inch length under head. It features partial threading and an uncoated, bright finish. Manufactured to ASME B18.2.1 standards, this fastener is built for high-strength bolted assemblies where tensile load capacity is critical. Grade 8 hardware is the correct choice for structural and heavy-duty mechanical applications across HVAC equipment framing, electrical enclosure mounting, pump and compressor bases, and similar trade-service installations.

This cap screw is suited for use in industrial and commercial mechanical systems where a high-strength, large-diameter fastener is required. Its partial threading allows for a smooth shank section that provides precise alignment and improved shear resistance in bolted joint applications. Typical installation scenarios include securing heavy structural steel members, mounting large mechanical equipment, and assembling flanged connections in trade environments. The 1-1/2-inch hex drive size is compatible with standard industrial wrenches and impact drivers used in field and shop service.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• 1-8 UNC thread standard for broad tool and nut compatibility
• Partially threaded shank for improved alignment and shear performance
• Bright uncoated finish suitable for dry indoor and controlled environments
• Manufactured to ASME B18.2.1 dimensional standards
• 1-1/2-inch hex drive fits standard heavy-duty wrenches and impact tooling

Compatibility

Designed as a standard 1-8 UNC Grade 8 hex head cap screw for use with matching Grade 8 or equivalent heavy hex nuts and hardened washers in structural and mechanical bolted assemblies.

Installation Notes

Installation is performed by qualified mechanical or maintenance tradespeople using appropriate torque specifications for Grade 8 fasteners per applicable industry standards. Always use a hardened flat washer under the head and nut when required by the joint design. Inspect threads for damage before installation and confirm nut grade compatibility before torquing. Follow applicable mechanical codes and equipment manufacturer guidelines for proper fastener torque and joint preload procedures.