Value Collection 581067BR Hex Socket Cap Screw 1-1/8-7 Unc

Product Description

The VALUE COLLECTION 581067BR is a partially threaded hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. It features a 1-1/8-7 UNC thread size and a 16-inch length under head, making it suited for deep-reach clamping and through-bolting scenarios. Manufactured from alloy steel with a black oxide finish, this screw delivers strong corrosion resistance and surface hardness. The 7/8-inch hex drive accepts standard hex keys and socket drivers. It meets ASME/ANSI B18.3 and ASTM A574 dimensional and mechanical standards. Machinists, millwrights, maintenance technicians, and industrial assembly crews are the primary installers.

This cap screw is used in heavy-duty mechanical assemblies where a recessed drive head and high tensile strength are required. Typical applications include machine frames, jigs and fixtures, press assemblies, and structural steel connections. The partially threaded shank provides a smooth bearing surface in clearance holes, which is important for shear-loaded joints. At 16 inches in length, this fastener is well suited for thick-section clamping or through-bolting in fabricated steel structures and large mechanical components.

Key Features

• 1-1/8-7 UNC thread for high-load coarse-thread engagement in standard inch-series tapped holes
• 16-inch length under head accommodates deep-reach and thick-section fastening
• Partially threaded shank provides a smooth bearing surface for shear-loaded joints
• Alloy steel construction meets ASTM A574 mechanical property requirements
• Black oxide finish provides mild corrosion resistance and reduces surface glare
• 7/8-inch hex socket drive accepts standard hex keys and socket drive tools

Compatibility

Designed as a standard inch-series hex socket cap screw for use in any 1-1/8-7 UNC tapped hole or clearance-drilled assembly requiring an ASME/ANSI B18.3 compliant fastener.

Installation Notes

Installation should be performed by qualified mechanical or maintenance technicians familiar with inch-series fastener standards. Ensure mating threads are clean and free of debris before installation. Use a calibrated torque wrench with the appropriate 7/8-inch hex socket or hex key bit and torque to values specified in the applicable engineering documentation for ASTM A574 alloy steel fasteners. De-energize and lock out any machinery before servicing fastened assemblies per OSHA lockout/tagout requirements.