Value Collection 451004BR Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION 451004BR is a hex head cap screw manufactured from Grade 8 steel with a bright, uncoated finish. It measures 1-1/8-7 UNC thread by 4 inches under the head and is partially threaded, conforming to ASME B18.2.1 standards. The Grade 8 designation indicates high tensile strength suitable for demanding fastening applications in mechanical, structural, and industrial assemblies. This screw weighs 1.47 pounds and requires a 1-11/16 inch hex key or wrench for installation. It is sold individually and intended for use by maintenance professionals, millwrights, and general contractors working with inch-standard fasteners.

This cap screw is suited for heavy-duty bolted joint applications where high-strength fasteners are required. Partial threading is appropriate for through-bolt configurations where the unthreaded shank provides shear strength across the joint interface. Typical install scenarios include machinery mounting, structural steel connections, and equipment repair in commercial and industrial settings. The inch-standard UNC thread pattern makes it compatible with standard inch-series tapped holes and nuts commonly found in North American fabrication environments.

Key Features

• Grade 8 steel construction for high tensile strength in demanding fastening applications
• Partially threaded shank provides shear load capacity across the joint interface
• UNC thread standard ensures compatibility with standard inch-series tapped holes and nuts
• Bright, uncoated finish suitable for dry indoor or controlled-environment use
• Conforms to ASME B18.2.1 dimensional and tolerance standards
• 1-11/16 inch hex drive accepts standard open-end, box, or impact wrenches

Compatibility

Designed as an OEM-style replacement or general-use fastener for inch-standard UNC threaded assemblies requiring Grade 8 hex head cap screws per ASME B18.2.1.

Installation Notes

Installation is performed by millwrights, maintenance mechanics, or general contractors using standard hand or impact wrenches with a 1-11/16 inch hex drive. De-energize, depressurize, or otherwise isolate the assembly before loosening or replacing fasteners in any load-bearing joint. Follow applicable torque specifications from the equipment manufacturer or relevant ASME or industry standards for Grade 8 fasteners of this diameter. Uncoated fasteners should not be used in wet or corrosive environments without additional protective measures.