Value Collection 451142BR Hex Head Cap Screw 3/4-10 X 7.5in Grade 8

Product Description

The VALUE COLLECTION 451142BR is a Grade 8 steel hex head cap screw with a 3/4-10 UNC thread and a 7-1/2 inch length under the head. It is partially threaded and carries an uncoated, bright finish. Grade 8 designates a high-strength fastener suitable for heavy structural and mechanical assemblies where elevated tensile and proof loads are required. This screw conforms to ASME B18.2.1 dimensional standards, making it a reliable choice for engineers, millwrights, and maintenance technicians working on equipment that demands traceable fastener specifications.

This fastener is used in heavy-duty industrial, construction, and mechanical applications where a high-strength bolted joint is required. The 3/4-10 UNC thread size and 7-1/2 inch under-head length make it well suited for thick structural steel connections, machinery frames, and equipment mounting assemblies. It is driven with a 1-1/8 inch hex key or wrench. Partial threading allows the unthreaded shank to bear shear loads in close-tolerance bolt holes, a common requirement in structural and precision mechanical applications.

Key Features

• Grade 8 steel construction for high tensile strength in demanding structural applications
• 3/4-10 UNC thread ensures broad compatibility with standard inch-series nuts and tapped holes
• Partially threaded shank provides shear load capacity in close-tolerance assemblies
• Bright uncoated finish — suitable for painted, plated, or dry indoor fastening environments
• Conforms to ASME B18.2.1 dimensional standards for traceable, specification-grade fastening
• 1-1/8 inch hex drive for use with standard wrenches and impact tools

Compatibility

Designed for use with standard 3/4-10 UNC Grade 8 heavy hex nuts, flat washers, and lock washers in inch-series bolted connections conforming to ASME or equivalent structural fastener specifications.

Installation Notes

Installation is performed by qualified mechanics, millwrights, or structural ironworkers using a 1-1/8 inch open-end, box, or impact wrench. Power down and de-energize any equipment before disassembling bolted joints. Torque to the value specified by the equipment manufacturer or applicable structural code — do not substitute a torque value not provided in the job documentation. Inspect the mating threads and bearing surfaces for damage before installation, and never use an uncoated fastener in a corrosive environment without appropriate protective treatment.