Value Collection 451048BR Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION 451048BR is a partially threaded hex head cap screw engineered for heavy-duty fastening applications in industrial and mechanical assembly. Sized at 1-1/4-12 UNF thread with a 6-1/2-inch length under head, this fastener is manufactured from Grade 8 steel with a bright uncoated finish. Grade 8 classification indicates high tensile strength, making it appropriate for demanding structural and mechanical joints where fastener integrity is critical. Machinists, millwrights, and maintenance technicians working with heavy equipment, structural steel, or industrial machinery commonly install this class of fastener. It conforms to ASME B18.2.1 standards, ensuring dimensional consistency across production and maintenance environments.

This cap screw is suited for high-load bolted connections in industrial equipment, heavy machinery frames, hydraulic assemblies, and structural steel fabrication. The UNF thread form provides finer thread engagement than coarse-series fasteners, which is useful where greater pullout resistance or precise clamping load control is required. Partial threading allows the unthreaded shank to act as a locating or shear surface within the joint. This size and grade is a standard choice for OEM assembly and MRO replacement in manufacturing and industrial facilities.

Key Features

• Grade 8 steel construction for high tensile strength in demanding fastening applications
• 1-1/4-12 UNF thread provides fine thread engagement and strong clamping force
• Partially threaded design allows unthreaded shank to serve as a shear or locating surface
• Bright uncoated finish suitable for dry or indoor service environments
• Conforms to ASME B18.2.1 dimensional standard for consistent fitment
• 1-7/8-inch hex key size for use with standard heavy-duty wrenches and sockets

Compatibility

Designed as a standard UNF Grade 8 hex head cap screw for industrial machinery, structural assemblies, and heavy equipment requiring 1-1/4-12 threaded fasteners conforming to ASME B18.2.1.

Installation Notes

Installation is performed by machinists, millwrights, or maintenance technicians using a 1-7/8-inch open-end, box, or socket wrench. De-energize and lock out all equipment before performing fastener service on live machinery per applicable OSHA lockout/tagout procedures. Do not reuse fasteners that show signs of thread deformation, corrosion, or yielding. Apply fastener torque according to the equipment manufacturer specification for Grade 8 UNF hardware; do not estimate torque values without referencing the appropriate engineering documentation.