Value Collection 581823BR Hex Socket Cap Screw 1-8 Unc

Product Description

The VALUE COLLECTION 581823BR is a partially threaded hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. It features a 1-8 UNC thread size and a 14-inch length under head, making it suitable for deep-grip installations where standard-length fasteners fall short. The screw is manufactured from alloy steel and finished with a black oxide coating that provides moderate corrosion resistance and reduces surface reflectivity. A 3/4-inch hex drive socket is required for installation. This fastener meets ASME/ANSI B18.3 and ASTM A574 standards and is installed by maintenance technicians, millwrights, and mechanical contractors across a wide range of industries.

This cap screw is suited for use in machine building, equipment maintenance, heavy fabrication, and general industrial assembly where a high-tensile socket head fastener is required. The partial threading allows for a smooth shank section that supports shear load distribution in bolted joints. Its long 14-inch under-head length is especially useful in applications involving thick stock, stacked components, or deep clearance holes where a standard-length screw would not reach full thread engagement.

Key Features

• 1-8 UNC thread form for compatibility with standard inch-series tapped holes
• 14-inch length under head accommodates deep-reach fastening requirements
• Partially threaded shank supports shear load distribution in bolted joints
• Alloy steel construction provides high tensile strength per ASTM A574
• Black oxide finish offers mild corrosion resistance and a low-glare surface
• Meets ASME/ANSI B18.3 dimensional standards for socket cap screws

Compatibility

Designed as a standard 1-8 UNC hex socket cap screw for use in any application requiring an ASME/ANSI B18.3 and ASTM A574 compliant fastener with a 14-inch under-head length and 3/4-inch hex drive.

Installation Notes

Installation requires a 3/4-inch hex key or socket driver of appropriate length for the joint depth. De-energize and lock out any machinery before servicing fastened assemblies. Verify that mating tapped holes conform to 1-8 UNC tolerance class before assembly. Apply thread lubricant or anti-seize compound as required by the equipment manufacturer or applicable maintenance specification to prevent galling on alloy steel threads.