Value Collection 451182BR Hex Head Cap Screw Grade 8

Product Description

The Value Collection 451182BR is a Grade 8 steel hex head cap screw designed for high-strength fastening in demanding mechanical and structural applications. With a 1-8 thread size (UNC) and a 7-1/2 inch length under head, this screw is partially threaded and carries a bright, uncoated finish. It conforms to ASME B18.2.1 dimensional standards, making it a reliable choice where precise fit and high tensile strength are required. At 1.9 pounds, this is a substantial fastener suited for heavy-duty assembly work in industrial, construction, and OEM fabrication environments.

This cap screw is commonly used in structural steel assemblies, heavy equipment manufacturing, agricultural machinery, and general industrial fabrication where Grade 8 tensile ratings are specified. The partial threading allows for bearing-area grip on thicker material stacks, and the 1-1/2 inch hex key size accommodates standard commercial-grade wrenches and impact tools. It is appropriate for both shop assembly and field installation by machinists, millwrights, ironworkers, and general contractors.

Key Features

• Grade 8 steel construction provides high tensile and proof-load strength for critical fastening applications
• Partially threaded shank allows load-bearing grip through thick material without full thread engagement
• Conforms to ASME B18.2.1 for dimensional consistency and interchangeability
• UNC thread form is widely compatible with standard inch-series nuts and tapped holes
• Bright, uncoated finish suitable for applications where plating or coating is not required or will be applied separately
• 1-1/2 inch hex drive size accommodates standard commercial wrenches and impact sockets

Compatibility

Designed as an OEM-style replacement or new-installation fastener for applications specifying a 1-8 UNC, Grade 8, partially threaded hex head cap screw per ASME B18.2.1.

Installation Notes

Installation should be performed by qualified tradespeople familiar with fastener torque requirements for Grade 8 inch-series hardware. Always verify the mating nut or tapped hole is rated to match the Grade 8 tensile specification before assembly. Use calibrated torque equipment appropriate to the application engineering spec; do not estimate torque on structural joints. Inspect threads for damage and ensure mating surfaces are clean and free of burrs before driving.