Value Collection 581952BR Hex Socket Cap Screw 1-3/8-6 Unc

Product Description

The VALUE COLLECTION 581952BR is a partially threaded hex socket cap screw designed for heavy-duty fastening applications in industrial, mechanical, and structural assemblies. Sized at 1-3/8-6 UNC with a 12-inch length under head, this fastener is driven by a 1-inch hex socket. Constructed from alloy steel with a black oxide finish coating, it delivers high tensile strength and moderate corrosion resistance. At 6.2 pounds per unit, this is a substantial fastener suited for large-scale bolted connections. Installation requires a matching 1-inch hex key or socket drive tool. Compliance with ASME/ANSI B18.3 and ASTM A574 standards confirms dimensional accuracy and mechanical performance.

This cap screw is used in heavy industrial equipment assembly, machinery frames, structural steel fabrication, and large mechanical fixtures where a recessed hex drive is preferred over an external hex head. The partially threaded shank provides a grip length that resists shear loading in bolted joints. It is appropriate for applications where controlled clamping force and high-strength fastener performance are required. Machinists, millwrights, and maintenance technicians are the typical installers in production and field environments.

Key Features

• 1-3/8-6 UNC thread size for use in coarse-thread tapped holes
• 12-inch length under head provides extended grip length for thick assemblies
• Partially threaded shank resists shear forces in bolted joints
• Alloy steel construction meets ASTM A574 high-strength requirements
• Black oxide finish provides mild corrosion resistance and reduced light reflection
• 1-inch hex socket drive for use with standard hex keys or socket tools
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard replacement or new-installation fastener for any application requiring a 1-3/8-6 UNC partially threaded hex socket cap screw conforming to ASME/ANSI B18.3 and ASTM A574 specifications.

Installation Notes

Installation requires a 1-inch hex key or socket drive rated for the required torque. Always verify that the mating tapped hole thread is 1-3/8-6 UNC and that thread engagement depth meets applicable engineering requirements before final assembly. De-energize and lock out all equipment before removing or replacing fasteners on operating machinery. Follow applicable industry torque specifications for alloy steel socket cap screws at this diameter as defined by the equipment manufacturer or applicable standards.