Value Collection 451160BR Hex Head Cap Screw 7/8-9

Product Description

The VALUE COLLECTION 451160BR is a Grade 8 steel hex head cap screw sized 7/8-9 x 6-1/2 inches, with partial threading along the shank. Conforming to ASME B18.2.1, this fastener meets recognized dimensional and mechanical standards for high-strength bolted connections. The bright uncoated finish leaves the steel surface bare, suitable for applications where coating conductivity, adhesive bonding, or subsequent surface treatment is a factor. At 1.2 pounds, it is a substantial fastener intended for demanding structural and mechanical assemblies in industrial, agricultural, and heavy-equipment environments.

This cap screw is used in applications requiring a high-strength, partially threaded bolt with a standard UNC thread form. Partial threading allows the unthreaded shank to act as a precision bearing surface in close-tolerance through-bolt configurations. Typical installations include structural steel connections, heavy machinery frames, agricultural equipment, and fabrication work where Grade 8 mechanical properties are specified. It is installed by mechanics, millwrights, ironworkers, and maintenance technicians working to engineered fastener specifications.

Key Features

• Grade 8 steel construction for high tensile and proof load strength in demanding assemblies
• Partially threaded shank provides a bearing surface for close-tolerance through-bolt applications
• 7/8-9 UNC thread form for broad compatibility with standard Grade 8 nuts and tapped components
• Bright uncoated finish — no coating to interfere with bonding, galvanic calculations, or post-treatment
• Conforms to ASME B18.2.1 for dimensional consistency and interchangeability
• 1-5/16 inch hex key size for installation with standard impact or hand tooling

Compatibility

Designed for use with standard 7/8-9 UNC Grade 8 heavy hex nuts, flat washers, and lock washers conforming to ASME and ASTM standards in inch-series fastener applications.

Installation Notes

Installation should be performed by qualified mechanics or ironworkers following applicable torque specifications from the relevant engineering standard or equipment manufacturer documentation. Confirm thread engagement depth and hole clearance before installation, particularly in structural applications governed by AISC or similar codes. Always inspect the mating nut and thread condition before assembly. Do not use impact tooling at full power without a torque verification step when the connection is load-bearing.