Value Collection 581776BR Hex Socket Cap Screw 7/8-14 Unf

Product Description

The VALUE COLLECTION 581776BR is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, tooling fixtures, and structural connections. The screw features a 7/8-14 UNF thread size with a 2-inch length under head and is fully threaded from end to end, providing maximum thread engagement across the full grip length. Constructed from alloy steel with a black oxide finish, it delivers solid mechanical strength and moderate corrosion resistance in controlled environments. The 3/4-inch hex drive accepts a standard hex key or Allen wrench for installation and removal. Machinists, millwrights, maintenance technicians, and fabricators are the typical installers for this fastener type.

This cap screw is suited for use in precision mechanical assemblies, machine frames, jigs, fixtures, and equipment where a flush or recessed fastener head is required. The fine 14-thread-per-inch UNF pitch provides finer thread engagement compared to coarse-thread alternatives, making it appropriate for applications requiring precise torque control or vibration-resistant clamping. It meets ASME/ANSI B18.3 and ASTM A574 standards, confirming dimensional and mechanical compliance for industrial and OEM use.

Key Features

• 7/8-14 UNF fully threaded alloy steel construction for high-strength fastening
• 2-inch length under head with full thread engagement from end to end
• 3/4-inch hex drive compatible with standard hex keys and Allen wrenches
• Black oxide finish provides a clean appearance and light surface protection
• Meets ASME/ANSI B18.3 and ASTM A574 dimensional and mechanical standards

Compatibility

Designed as a standard hex socket cap screw per ASME/ANSI B18.3 for use in any application accepting a 7/8-14 UNF fully threaded socket head cap screw with a 2-inch length under head.

Installation Notes

Installation is performed using a 3/4-inch hex key or Allen wrench; ensure the drive tool is fully seated in the socket to avoid rounding. Confirm mating thread condition and lubricate threads as required by the assembly specification before torquing. Power down or de-energize any equipment before accessing fastener locations on live machinery. Follow applicable ASME or equipment OEM torque specifications for this thread size and material grade.