Value Collection -30165-31/2 Hex Cap Screw 7/8-9 X 3.5 in Grade 5

Product Description

The VALUE COLLECTION -30165-31/2 is a partially threaded hex head cap screw sized 7/8-9 UNC by 3.5 inches under the head. Manufactured from Grade 5 steel with a zinc-plated finish for corrosion resistance, this fastener is suited for structural and mechanical assemblies where a coarse-thread, high-strength connection is required. The hex drive profile accepts standard hex sockets and wrenches, making installation straightforward in production or field environments. Licensed tradespeople and maintenance mechanics working on equipment frames, flanges, and brackets will find this screw appropriate for moderate-strength clamping applications.

This screw is used in a wide range of industrial, mechanical, and construction applications. The 7/8-9 UNC thread is a common coarse-thread specification found in structural steel connections, equipment mounting, and general mechanical assemblies. The partial threading allows for a smooth shank section that improves shear resistance in close-tolerance holes. It is packaged in quantities of 25 per package, suitable for job-lot or maintenance stock replenishment.

Key Features

• 7/8-9 UNC coarse thread for reliable engagement in standard tapped holes
• 3.5 inches length under head for deep reach in structural applications
• Grade 5 steel construction meets SAE minimum tensile strength requirements for medium-duty fastening
• Zinc-plated finish provides baseline corrosion protection in indoor and light-exposure environments
• Partially threaded shank improves shear load performance in fitted or close-tolerance applications
• Packaged in quantities of 25 for convenient job-lot use

Compatibility

Designed as a standard UNC hex head cap screw for use in any application specifying a 7/8-9 coarse-thread fastener at 3.5 inches length under head with Grade 5 minimum strength requirements.

Installation Notes

Installation should be performed by qualified mechanics or tradespeople following applicable torque specifications for Grade 5 fasteners at this diameter as specified by the equipment manufacturer or relevant fastener standards. Always confirm the mating thread is clean and free of damage before installation. Do not substitute this fastener in applications requiring Grade 8 or higher tensile strength without engineering review. Zinc-plated fasteners are not recommended for sustained exposure to salt spray or highly corrosive environments without additional protective measures.