Value Collection 581927BR Hex Socket Cap Screw 1-1/4-12 Unf

Product Description

The VALUE COLLECTION 581927BR is a partially threaded hex socket cap screw engineered for high-strength fastening applications in industrial, mechanical, and maintenance environments. It features a 1-1/4-12 UNF thread size, a 7-inch length under head, and a 7/8-inch hex drive. Constructed from alloy steel with a black oxide coating, this cap screw delivers corrosion resistance and consistent clamping force under demanding conditions. It meets ASME/ANSI B18.3 and ASTM A574 standards, making it appropriate for applications where fastener grade and dimensional accuracy are required. Maintenance technicians, millwrights, and industrial mechanics are the typical installers.

This cap screw is suited for heavy-duty mechanical assemblies, machine frames, equipment mounting, and structural fastening where a fine-thread UNF pattern provides precise torque control and resistance to loosening from vibration. The black oxide finish offers mild corrosion protection in indoor and low-exposure environments. Its partial threading allows for load distribution across the unthreaded shank in applications with close-tolerance bores or shear loading requirements.

Key Features

• 1-1/4-12 UNF fine thread for precise engagement and vibration resistance
• 7-inch length under head accommodates deep fastening applications
• 7/8-inch hex socket drive for high torque input with standard allen or hex keys
• Alloy steel construction meets ASTM A574 high-strength requirements
• Black oxide coating provides mild corrosion resistance and reduced light reflection
• Partial threading enables shank-load distribution in close-tolerance assemblies

Compatibility

Designed as an OEM-style and general-purpose replacement hex socket cap screw for industrial and mechanical assemblies requiring a 1-1/4-12 UNF partially threaded fastener conforming to ASME/ANSI B18.3 and ASTM A574 standards.

Installation Notes

Installation should be performed by a qualified mechanic or millwright familiar with high-strength fastener procedures. Always verify thread engagement depth and bore condition before installation. Use a calibrated torque wrench sized for a 7/8-inch hex drive and follow the applicable ASME or equipment manufacturer torque specifications for the fastener grade and joint material. De-energize and lock out any equipment before accessing fastener locations on live machinery.