Value Collection 451188BR Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION 451188BR is a hex head cap screw designed for high-strength fastening applications in structural, mechanical, and industrial assemblies. It carries a Grade 8 steel rating, which indicates a tensile strength suitable for demanding load-bearing connections. The fastener measures 1-8 thread size with a 9-1/2 inch length under head, and features partial threading along the shank. The uncoated bright finish is standard for applications where plating is not required or where the installer will apply their own protective treatment. Installation uses a 1/2 inch hex key drive. This screw conforms to ASME B18.2.1 and uses UNC thread standards.

This cap screw is appropriate for use in heavy equipment, structural steel connections, machinery frames, and industrial fabrication where Grade 8 tensile performance is specified. The partially threaded shank provides a bearing surface that resists shear loads, making it suitable for bolted joints where precise clamping and alignment are critical. Mechanical contractors, millwrights, ironworkers, and maintenance technicians are the primary installers of fasteners in this class.

Key Features

• Grade 8 steel construction for high tensile strength in load-bearing joints
• Partially threaded shank provides shear resistance and accurate joint alignment
• UNC thread form per ASME B18.2.1 standard ensures dimensional consistency
• Bright uncoated finish suitable for dry environments or secondary coating
• 1/2 inch hex key size for standard socket and wrench tooling
• 9-1/2 inch length under head accommodates thick structural members

Compatibility

Designed as a standard UNC Grade 8 hex head cap screw for use in inch-series bolted assemblies requiring ASME B18.2.1 conformance.

Installation Notes

Installation should be performed by a qualified mechanic or trades professional familiar with structural fastening requirements. Always degrease mating threads and apply thread lubricant or anti-seize as specified by the joint design before torquing. Use a calibrated torque wrench and follow the torque specification from the equipment manufacturer or applicable engineering standard. Do not reuse fasteners that show signs of yielding, thread damage, or corrosion.