Value Collection 581809BR Hex Socket Cap Screw 1-8 Unc

Product Description

The VALUE COLLECTION 581809BR is a fully threaded hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assembly work. It features a 1-8 UNC thread size, a 1.75-inch length under head, and a 0.75-inch hex drive. Constructed from alloy steel with a black oxide coating, this fastener delivers strong clamping force and improved corrosion resistance compared to uncoated steel. It meets ASME/ANSI B18.3 and ASTM A574 standards, making it appropriate for demanding load-bearing and precision-fit applications. Machinists, millwrights, and maintenance technicians typically install this type of fastener.

This screw is suited for use in equipment assembly, machine bases, jigs and fixtures, and general industrial maintenance where a recessed drive head and high tensile strength are required. The 1-8 UNC coarse thread engages quickly and holds reliably in both tapped steel and threaded inserts. The low-profile socket head allows installation in countersunk or clearance-limited locations where a hex bolt head would not fit.

Key Features

• 1-8 UNC coarse thread for fast engagement in tapped steel and threaded inserts
• Fully threaded along entire shank length for maximum thread engagement
• 0.75-inch hex socket drive for use with standard Allen keys or hex bit drivers
• Alloy steel construction meets ASTM A574 for high tensile strength
• Black oxide finish provides mild corrosion resistance and reduces light reflection
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as an OEM-style replacement or direct-fit fastener for applications requiring a 1-8 UNC fully threaded hex socket cap screw per ASME/ANSI B18.3 and ASTM A574 specifications.

Installation Notes

Install using a correctly sized hex key or socket bit driver rated for the torque requirements of the application. Ensure the mating tapped hole is clean and free of debris before threading. De-energize or lock out any equipment before fastener installation or removal in live machinery. Follow applicable industry torque guidelines for the fastener grade and application.