Value Collection 451051BR Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION 451051BR is a Grade 8 steel hex head cap screw sized at 1-1/4-12 UNF thread by 8 inches under the head, supplied in a bright uncoated finish. Grade 8 steel delivers high tensile strength suitable for demanding structural and mechanical fastening applications. The partial threading leaves a shank section under the head, which resists shear loads better than fully threaded fasteners of the same length. This screw meets ASME B18.2.1 dimensional standards and is driven with a 1-7/8 inch hex wrench or socket. It is the type of heavy-duty hardware used by millwrights, ironworkers, pipefitters, and maintenance technicians working on equipment frames, flanges, and structural assemblies.

This cap screw is suited for industrial and commercial fastening applications where high-strength inch-series hardware is required. Typical installations include equipment mounting, structural steel connections, machine frames, and flange bolting where UNF thread engagement and a clean shank section are specified. The bright uncoated finish means the fastener arrives free of any protective coating, which is appropriate for applications where a specific field-applied finish, lubricant, or locking compound will be used after installation.

Key Features

• Grade 8 steel construction for high tensile and proof-load strength
• 1-1/4-12 UNF thread provides fine-pitch engagement for precise torque control
• Partially threaded shank resists shear loads in bolted joints
• Meets ASME B18.2.1 dimensional standard for hex head cap screws
• Bright uncoated finish accepts field-applied lubricants or coatings
• 1-7/8 inch hex drive compatible with standard industrial sockets and wrenches

Compatibility

Designed as an OEM-style and aftermarket replacement or new-installation fastener for structural and mechanical assemblies requiring 1-1/4-12 UNF inch-series Grade 8 hex head cap screws conforming to ASME B18.2.1.

Installation Notes

Installation should be performed by a qualified mechanic, millwright, or maintenance technician using a 1-7/8 inch socket or open-end wrench. Verify mating thread class and material compatibility before installation. Degrease or apply specified thread lubricant or locking compound per the equipment manufacturer's torque specification. Never mix Grade 8 fasteners with lower-grade nuts or threaded inserts without confirming the mating component's rated strength.