Value Collection 011591BR Hex Socket Cap Screw 1-1/2-6 Unc

Product Description

The VALUE COLLECTION 011591BR is a hex socket cap screw designed for heavy-duty fastening applications in industrial, mechanical, and structural assemblies. It features a 1-1/2-6 UNC thread form and a 5-inch length under head, with partial threading along the shank. The drive type is hex, accepting a 1-inch hex key or Allen wrench. Constructed from alloy steel with a black oxide finish, this fastener delivers high tensile strength and moderate corrosion resistance in controlled environments. It conforms to ASME/ANSI B18.3 and ASTM A574 standards, making it suitable for precision-load applications where dimensional and strength compliance is required.

This screw is appropriate for use in machine assembly, heavy equipment fabrication, tooling fixtures, and structural bolted connections where a recessed drive is preferred. The partial thread configuration is standard for longer-length cap screws, allowing the unthreaded shank to bear shear loads while the threaded portion engages the tapped hole. Machinists, millwrights, maintenance technicians, and mechanical contractors commonly specify this type of fastener. Its large 1-1/2-inch diameter makes it well suited for high-clamping-force applications in steel-to-steel joints.

Key Features

• 1-1/2-6 UNC thread size for high-strength bolted joints
• 5-inch length under head with partial threading for shear-load-bearing shank
• 1-inch hex drive accepts standard hex keys and Allen drivers
• Alloy steel construction meets ASTM A574 strength requirements
• Black oxide finish provides mild corrosion resistance and reduces light reflection
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw for use in tapped holes with 1-1/2-6 UNC internal threads in steel, cast iron, or other compatible base materials.

Installation Notes

Installation should be performed by a qualified machinist or mechanical technician using a properly sized 1-inch hex key or torque wrench with a hex bit. Verify that the receiving tapped hole matches the 1-1/2-6 UNC thread specification before installation. Clean threads and apply appropriate thread lubricant or anti-seize compound as required by the application to achieve accurate clamp load. Always torque to the value specified by the equipment manufacturer or applicable engineering standard.