Value Collection 581692BR Hex Socket Cap Screw 5/8-18 Unf

Product Description

The VALUE COLLECTION 581692BR is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, fixtures, and structural connections. It features a 5/8-18 UNF thread profile and measures 8 inches under the head, making it suitable for deep-reach fastening tasks where a standard-length fastener falls short. The screw is manufactured from alloy steel and finished with a black oxide coating, which provides moderate corrosion resistance and reduces light reflection in finished assemblies. A 1/2-inch hex drive socket is required for installation. This fastener is partially threaded, which helps maintain clamping force across unthreaded shank sections in bolted joints.

This cap screw is used in industrial, manufacturing, and maintenance applications requiring a fine-thread, high-tensile fastener. The 5/8-18 UNF thread pitch is common in precision assemblies where vibration resistance and fine thread engagement are needed. Typical install scenarios include machine frames, jigs and fixtures, tooling plates, and equipment repairs across general industrial and trades environments. It is installed by machinists, millwrights, and maintenance technicians working with standard SAE or UNF threaded components.

Key Features

• 5/8-18 UNF fine thread for precise engagement and vibration resistance
• 8-inch length under head for deep-reach bolting applications
• Alloy steel construction meets ASME/ANSI B18.3 and ASTM A574 standards
• Black oxide finish for moderate corrosion protection and reduced reflectivity
• Partially threaded shank maintains clamping load across joint interfaces
• 1/2-inch hex socket drive for use with standard socket wrenches and hex keys

Compatibility

Designed as an OEM-style replacement or standard fastener for applications requiring a 5/8-18 UNF partially threaded hex socket cap screw conforming to ASME/ANSI B18.3 and ASTM A574 specifications.

Installation Notes

Installation requires a 1/2-inch hex drive tool such as a T-handle hex key, socket adapter, or Allen-type wrench. Power down or de-energize any equipment before accessing fastened assemblies. Apply thread-locking compound or appropriate lubrication as required by the assembly specification. Do not exceed the torque rating specified by the equipment manufacturer or structural engineer for this fastener size and grade.