Value Collection 451797BR Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION 451797BR is a heavy-duty hex head cap screw sized 1-1/2-12 x 13 inches, manufactured from Grade 8 steel with a bright, uncoated finish. This fastener is partially threaded and conforms to ASME B18.2.1 dimensional standards. With a thread size of 1-1/2-12 UNF and a length under head of 13 inches, it is engineered for high-strength bolted connections that require fine-thread engagement. The 2-1/4-inch hex key size accommodates standard industrial wrenching. At 7.42 pounds, this is a substantial fastener suited for structural and mechanical assembly work performed by maintenance mechanics, millwrights, and industrial technicians.

This cap screw is used in heavy industrial and mechanical applications where high tensile strength and fine-thread precision are required. Typical install scenarios include large machinery frames, structural steel connections, hydraulic equipment mounts, and heavy fabrication assemblies. The partially threaded shank provides a bearing surface in the bolt hole, which is important in shear-load applications. Grade 8 steel provides significantly higher proof load and tensile strength than Grade 5 fasteners, making this appropriate for demanding service environments.

Key Features

• Grade 8 steel construction for high tensile and proof load capacity
• 1-1/2-12 UNF fine thread for precise torque control and reduced loosening risk
• Partially threaded shank designed to handle shear and bearing loads
• Bright uncoated finish — suitable for use with aftermarket coatings or as-is in dry indoor environments
• Conforms to ASME B18.2.1 dimensional standards
• 2-1/4-inch hex drive accommodates standard industrial box-end wrenches and impact sockets

Compatibility

Designed for use in inch-series bolted assemblies requiring a 1-1/2-12 UNF thread pattern and 13-inch grip length, consistent with ASME B18.2.1 hex head cap screw specifications.

Installation Notes

Installation should be performed by qualified mechanics or millwrights familiar with high-strength fastener procedures. Always verify mating thread condition and hole alignment before driving. Apply thread lubricant or anti-seize only if specified by the equipment manufacturer, as lubrication affects torque-tension relationships. Use calibrated torque equipment appropriate for Grade 8 fasteners of this size.