Value Collection 88547211 Hex Socket Cap Screw 7/8-9 Unc

Product Description

The VALUE COLLECTION 88547211 is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, industrial equipment, and structural connections. It features a 7/8-9 UNC thread form with a 2.5-inch length under head and is fully threaded along its entire shank. Drive engagement is through a 0.75-inch hex socket. Constructed from alloy steel with a black oxide finish, this fastener offers solid mechanical strength and moderate corrosion resistance in dry or lightly oiled environments. Installation is performed with a standard hex key or socket drive tool.

This screw is suited for use in heavy-duty mechanical and industrial applications where a recessed hex drive is required for flush or countersunk installation. Typical use cases include machine frames, jigs, fixtures, tooling plates, and equipment housings. The fully threaded configuration maximizes thread engagement across the full clamping length, making it appropriate for through-hole and blind-hole assemblies where consistent clamping force is needed. Maintenance technicians and machinists working on industrial equipment are the primary installers.

Key Features

• 7/8-9 UNC thread size for compatibility with standard unified coarse-thread tapped holes
• 2.5-inch length under head provides substantial clamping reach in thick stock or stacked assemblies
• Fully threaded shank maximizes thread engagement and clamping strength
• 0.75-inch hex socket drive for secure, high-torque installation with standard hex keys or socket drivers
• Alloy steel construction delivers high tensile and shear strength for demanding load conditions
• Black oxide finish provides mild corrosion resistance and reduces light reflection in precision applications

Compatibility

Designed as a standard-pattern hex socket cap screw for any application requiring a 7/8-9 UNC thread and 2.5-inch length under head in alloy steel with a black oxide finish.

Installation Notes

Installation is performed by a machinist, maintenance mechanic, or industrial technician using a 0.75-inch hex key or appropriately rated socket driver. Ensure the mating tapped hole is clean, free of debris, and cut to the correct 7/8-9 UNC thread specification before driving the fastener. De-energize and lock out all equipment before performing fastener work on live machinery in accordance with applicable OSHA lockout/tagout procedures. Do not reuse fasteners that show signs of thread damage, galling, or deformation.