Value Collection -30165-51/2 Hex Cap Screw 7/8-9 X 5.5 in Grade 5

Product Description

The VALUE COLLECTION -30165-51/2 is a partially threaded hex head cap screw engineered for general industrial and mechanical fastening applications. It features a 7/8-9 UNC thread profile and a 5.5-inch length under head, conforming to ASME B18.2.1 dimensional standards. Manufactured from Grade 5 steel with a zinc-plated finish, it provides a balance of tensile strength and corrosion resistance suited for structural and assembly work. Licensed tradespeople and maintenance mechanics reach for this fastener when a reliable, standard-spec hex cap screw is required in heavy-duty bolted connections.

This fastener is appropriate for use in industrial machinery assembly, structural steel connections, agricultural equipment, and general fabrication. The partial threading allows for a smooth shank section that resists shear loads in clearance-hole applications. The zinc-plated finish offers baseline protection against oxidation in indoor and mildly corrosive environments. It is sold in a package quantity of 25 units, making it practical for both single-repair jobs and small production runs where consistent Grade 5 performance is required.

Key Features

• 7/8-9 UNC thread size for compatibility with standard inch-series nuts and tapped holes
• 5.5-inch length under head accommodates thick stackups and structural fastening needs
• Grade 5 steel construction delivers medium-high tensile strength for demanding bolted joints
• Partially threaded shank handles shear loads in clearance-fit assemblies
• Zinc-plated finish provides corrosion resistance in dry and low-moisture environments
• Conforms to ASME B18.2.1 for dimensional accuracy and interchangeability

Compatibility

Designed as a standard ASME B18.2.1 hex head cap screw for use with 7/8-9 UNC hex nuts, washers, and tapped components in inch-series fastener applications.

Installation Notes

Installation is performed by mechanics, millwrights, or maintenance technicians using a standard hex wrench or impact driver with the appropriate socket. Torque to the fastener joint specification required by the assembly engineer or applicable equipment service documentation. Ensure mating threads and bearing surfaces are clean and free of debris before installation. Do not mix Grade 5 fasteners with higher-grade hardware in the same joint without engineering review.