Value Collection 581961BR Hex Socket Cap Screw 1-1/2-6 Unc

Product Description

The VALUE COLLECTION 581961BR is a heavy-duty hex socket cap screw designed for high-strength bolted assemblies in industrial, structural, and mechanical applications. Manufactured from alloy steel with a black oxide finish, this fastener meets ASME/ANSI B18.3 and ASTM A574 standards, confirming its suitability for demanding load-bearing connections. The screw features a 1-1/2-6 UNC thread, a 15-inch length under the head, and a 1-inch hex drive socket. Partial threading along the shank provides a defined grip length, which is essential for precision clamping in engineered joint designs. Maintenance technicians, millwrights, and industrial assemblers are the typical installers of this fastener class.

This cap screw is intended for use in heavy industrial equipment, fabricated steel structures, machinery frames, and other applications requiring a large-diameter, partially threaded socket head fastener. The 1-1/2-6 UNC coarse thread pitch is well suited to thick steel members and cast components where thread engagement depth is substantial. The black oxide coating provides mild corrosion resistance and reduces galling during installation. At approximately 9 pounds per unit, this is a large-format fastener appropriate for high-load joints in manufacturing, mining, and construction equipment.

Key Features

• 1-1/2-6 UNC coarse thread for high clamping force in heavy steel assemblies
• 15-inch length under head accommodates thick structural members and long grip lengths
• Partial threading preserves a smooth shank section for precise joint clamping
• Alloy steel construction meets ASTM A574 high-strength socket head cap screw specification
• Black oxide finish reduces surface corrosion and minimizes galling on installation
• 1-inch hex drive socket requires a standard heavy-duty hex key or socket driver

Compatibility

Designed as an OEM-style replacement or new-installation fastener for heavy industrial bolted connections requiring a 1-1/2-6 UNC socket head cap screw conforming to ASME/ANSI B18.3 and ASTM A574 standards.

Installation Notes

Installation should be performed by a qualified millwright, maintenance mechanic, or structural assembler familiar with high-strength fastener torque procedures. Always de-energize and lock out equipment before servicing any bolted joint. Use the correct 1-inch hex key or socket drive tool rated for the torque requirements of this fastener class. Consult applicable engineering drawings or AISC/ASME guidelines for joint-specific torque and preload values, as these are not provided here.