Value Collection 011559BR Hex Socket Cap Screw 1-1/4-7 Unc

Product Description

The VALUE COLLECTION 011559BR is a fully threaded hex socket cap screw engineered for high-strength fastening applications in industrial, mechanical, and structural assemblies. Made from alloy steel with a black oxide finish, this fastener delivers solid corrosion resistance and reduced surface reflectivity. It features a 1-1/4-7 UNC thread specification and a 3.5-inch length under head, accepting a 7/8-inch hex drive. Licensed mechanics, millwrights, and maintenance technicians install this type of fastener where high clamping force and precise torque control are required in ferrous metal assemblies.

This socket cap screw is suited for use in heavy equipment, machine tool components, jigs, fixtures, and fabricated structural assemblies where a recessed drive is preferred over a hex head. The 1-1/4-7 UNC coarse thread pitch provides strong engagement in standard tapped holes and is well suited for steel and cast iron applications. Full threading along the 3.5-inch shank length maximizes thread engagement across variable material thicknesses.

Key Features

• 1-1/4-7 UNC coarse thread for strong engagement in standard tapped steel and cast iron holes
• Fully threaded shank across 3.5-inch length under head for maximum engagement flexibility
• Alloy steel construction provides high tensile and yield strength for demanding load applications
• Black oxide finish reduces reflectivity and offers mild corrosion resistance in dry environments
• 7/8-inch hex socket drive allows precise torque application with standard hex keys or socket tooling
• Meets ASME/ANSI B18.3 and ASTM A574 standards for dimensional and mechanical compliance

Compatibility

Designed as a standard replacement or service fastener for applications requiring a 1-1/4-7 UNC fully threaded alloy steel socket cap screw conforming to ASME/ANSI B18.3 and ASTM A574 specifications.

Installation Notes

Installation is performed by millwrights, machinists, or maintenance mechanics using a calibrated torque wrench with a 7/8-inch hex bit. Ensure the mating tapped hole is clean, properly sized to 1-1/4-7 UNC, and free of debris before installation. Apply thread lubricant or anti-seize as appropriate for the service environment to achieve accurate torque-to-clamp-force results. Do not exceed rated torque values for the fastener grade and do not use impact drivers without proper torque control.