Value Collection 451007BR Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION 451007BR is a partially threaded hex head cap screw designed for heavy-duty bolted connections in industrial, mechanical, and structural applications. It features a 1-1/8-7 UNC thread size with a 5-1/2 inch length under head, manufactured from Grade 8 steel with a bright uncoated finish. The Grade 8 rating indicates a high-strength fastener suitable for high-stress assemblies where tensile strength and shear resistance are critical. Conforming to ASME B18.2.1, this fastener meets established dimensional and performance standards expected by trade professionals. The partial thread configuration provides a smooth shank section under the head for improved load bearing in clearance-hole applications.

This fastener is suited for heavy equipment assembly, structural steel work, machinery mounting, and other demanding bolted joint applications where Grade 8 strength is specified. The 1-1/8-7 UNC thread and 5-1/2 inch under-head length make it appropriate for thick-section connections requiring a full-grip shank. It is typically installed by machinists, millwrights, ironworkers, and maintenance mechanics working to engineered fastener specifications.

Key Features

• Grade 8 steel construction for high tensile and proof load strength in demanding assemblies
• Partially threaded shank provides a smooth bearing surface for clearance-hole joint designs
• 1-1/8-7 UNC thread standard ensures broad compatibility with standard inch-series nuts and tapped holes
• Bright uncoated finish — suitable for applications where coating or plating is specified separately or not required
• Conforms to ASME B18.2.1 dimensional standards for hex head cap screws
• 1-11/16 inch hex key size for use with standard hex wrenches and impact tooling

Compatibility

Designed for use with standard 1-1/8-7 UNC inch-series hex nuts, heavy hex nuts, and tapped components conforming to ASME dimensional standards in structural or mechanical assemblies.

Installation Notes

Installation should be performed by qualified mechanics or tradespeople following applicable torque specifications from the engineered drawings or fastener manufacturer data for Grade 8 fasteners of this thread size. Use a properly sized 1-11/16 inch hex wrench or impact socket rated for the required torque. Ensure mating threads and bearing surfaces are clean and free of debris before assembly. Do not reuse fasteners that show signs of thread damage, corrosion, or deformation.