Value Collection 451298BR Hex Head Cap Screw 7/8-14 X 15 in

Product Description

The VALUE COLLECTION 451298BR is a Grade 8 steel hex head cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assembly work. This screw features a 7/8-14 UNF thread size and a 15-inch length under head, with partial threading along the shank. Grade 8 steel provides superior tensile strength compared to lower-grade fasteners, making it suitable for heavy-duty bolted joints. The bright, uncoated finish is standard for dry or controlled environments. Machinists, millwrights, and maintenance technicians are the typical installers for fasteners of this class.

This cap screw is well suited for general industrial machinery assembly, structural bolted connections, and equipment maintenance where a long partially threaded 7/8-14 UNF fastener is required. The partial threading allows for a smooth shank section through clearance holes, which provides more precise clamping and shear resistance compared to a fully threaded fastener. It is appropriate for applications demanding conformance to ASME B18.2.1 dimensional standards, which govern hex cap screw geometry and tolerances in inch-series hardware.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• 7/8-14 UNF thread provides fine-thread engagement for vibration-prone applications
• 15-inch length under head accommodates deep clamping stacks or long-reach assemblies
• Partially threaded shank allows smooth bearing surface through clearance holes
• Bright uncoated finish meets ASME B18.2.1 dimensional standards
• 1-5/16 inch hex key size for use with standard heavy hex tooling

Compatibility

Designed as a standard inch-series hex head cap screw per ASME B18.2.1, compatible with any application requiring a 7/8-14 UNF partially threaded fastener in Grade 8 steel.

Installation Notes

Installation should be performed by qualified machinists, millwrights, or maintenance technicians familiar with torqued fastener assemblies. Always de-energize, depressurize, or otherwise isolate the equipment before disassembling or reassembling fastened joints. Use a calibrated torque wrench and consult applicable engineering specifications or equipment service documentation for the required clamp load. Fastener reuse should be evaluated based on joint requirements and any applicable codes or standards governing the assembly.