Value Collection 581792BR Hex Socket Cap Screw 7/8-14 Unf

Product Description

The VALUE COLLECTION 581792BR is a partially threaded hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. Machined from alloy steel and finished with a black oxide coating, this fastener delivers solid corrosion resistance and a consistent surface hardness suited to demanding environments. The screw measures 4.5 inches in length under the head with a 7/8-14 UNF thread size, providing fine-thread engagement for applications where vibration resistance and precise clamping load are required. Drive type is hex socket, accepting a 3/4-inch drive tool for installation and removal.

This cap screw is appropriate for use in machinery assembly, heavy equipment maintenance, and general industrial fabrication where alloy steel fasteners meeting ASME/ANSI B18.3 and ASTM A574 standards are specified. The 7/8-14 UNF thread form is a fine-pitch unified thread, commonly selected in metal-to-metal joints where thread stripping resistance and controlled preload are priorities. Machinists, millwrights, maintenance technicians, and mechanical contractors are the typical installers of this fastener type.

Key Features

• 7/8-14 UNF fine thread for precise torque control and vibration resistance
• Partially threaded shank allows for shoulder bearing load in clearance-hole applications
• Alloy steel construction meets ASTM A574 high-strength requirements
• Black oxide finish provides mild corrosion protection and reduces light reflection
• 3/4-inch hex socket drive for use with standard hex keys or socket drive tooling
• Meets ASME/ANSI B18.3 dimensional standards for socket cap screws

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw suitable for any application calling for a 7/8-14 UNF partially threaded alloy steel fastener with a 3/4-inch hex drive.

Installation Notes

Installation should be performed by a qualified mechanic or technician using a calibrated hex socket or hex key sized at 3/4 inch. Ensure mating threads are clean and free of debris before engagement to prevent cross-threading. Apply thread lubricant or thread-locking compound as specified by the equipment manufacturer. De-energize and lock out all affected machinery before replacing or installing fasteners in powered assemblies.