Value Collection 451038BR Hex Cap Screw 1-1/4-7 X 9 in Grade 8

Product Description

The VALUE COLLECTION 451038BR is a heavy-duty hex head cap screw designed for high-strength fastening applications. Manufactured from Grade 8 steel with a bright, uncoated finish, this fastener measures 1-1/4-7 UNC thread by 9 inches in length under head and is partially threaded along its shank. It conforms to ASME B18.2.1 standards, making it a reliable choice for structural, industrial, and mechanical assembly work. The 1-11/16-inch hex drive size accommodates standard commercial hex tooling. Weighing 3.61 pounds, this is a substantial fastener suited for demanding load-bearing connections.

This cap screw is used in industrial machinery assembly, structural steel fabrication, heavy equipment maintenance, and mechanical construction applications where high clamping force and tensile strength are required. Its partially threaded shank provides a smooth bearing surface across joint interfaces, which is preferred in shear-loaded connections. Installers in manufacturing, millwright, and general industrial trades commonly specify Grade 8 fasteners for applications where SAE Grade 5 or lower-grade hardware is insufficient.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• Partially threaded shank provides a clean bearing surface at the joint
• 1-1/4-7 UNC thread form conforms to ASME B18.2.1 standard
• Bright, uncoated finish — suitable for dry or protected indoor environments
• 1-11/16-inch hex key size compatible with standard commercial drive tooling
• Sold individually, single-piece minimum order quantity

Compatibility

Designed as an ASME B18.2.1-compliant inch-series hex head cap screw for use with 1-1/4-7 UNC threaded nuts, tapped holes, and standard fastener hardware in industrial and structural assemblies.

Installation Notes

Installation should be performed by qualified millwrights, maintenance mechanics, or structural assembly personnel following applicable industry torque specifications for Grade 8 fasteners of this thread size. Use calibrated torque tooling to achieve proper clamp load without overstressing the fastener. Ensure mating threads in tapped holes or nuts are clean, undamaged, and of compatible thread class before installation. Bright, uncoated fasteners should not be used in corrosive or outdoor environments without additional corrosion protection measures.