Value Collection 451016BR Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION 451016BR is a fully threaded hex head cap screw designed for high-strength bolted connections in demanding industrial and mechanical applications. Manufactured from Grade 8 steel with a bright uncoated finish, this fastener measures 1-1/8-12 thread size with a 3-1/2 inch length under head. The UNF thread form and ASME B18.2.1 standard compliance make it a reliable choice for engineers and tradespeople who require consistent dimensional tolerances and tensile strength in their assemblies. At 1.33 pounds, the fastener is well-suited for heavy-duty structural and mechanical joints where a standard Grade 5 fastener would be undersized.

This cap screw is used in industrial machinery, heavy equipment, structural steel fabrication, and other applications requiring a fine-thread, high-strength fastener. The 1-1/8-12 UNF thread provides finer thread engagement than a coarse-thread equivalent, making it appropriate for applications where vibration resistance and precise torque control are priorities. It is typically installed by millwrights, maintenance mechanics, and industrial technicians working on equipment frames, hydraulic assemblies, and structural connections.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• Fully threaded along the 3-1/2 inch length under head
• UNF 1-1/8-12 thread form for fine-thread engagement and vibration resistance
• Bright uncoated finish — suitable for use where secondary coating or plating will be applied
• Meets ASME B18.2.1 dimensional standards for consistent fit and interchangeability
• 1-11/16 inch hex key size for standard socket or wrench installation

Compatibility

Designed as an OEM-style replacement or new-installation fastener for applications requiring a 1-1/8-12 UNF fully threaded hex head cap screw conforming to ASME B18.2.1.

Installation Notes

Installation is performed by qualified millwrights, industrial mechanics, or maintenance technicians. Always verify the mating thread specification and material compatibility before installation. Use a calibrated torque wrench and follow the fastener manufacturer or equipment OEM torque specifications for Grade 8 fasteners in the applicable joint design. Inspect threads for damage before installation and ensure the joint surfaces are clean and free of debris.