Value Collection 011571BR Hex Socket Cap Screw 1-1/4-7 Unc

Product Description

The VALUE COLLECTION 011571BR is a partially threaded hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. Manufactured from alloy steel with a black oxide coating, this fastener delivers reliable clamping force and corrosion resistance in demanding environments. The 7/8-inch hex drive accepts a standard hex key or socket driver, and the 6-1/2-inch length under head provides deep engagement in thick material stacks. It meets ASME/ANSI B18.3 and ASTM A574 standards, confirming dimensional accuracy and mechanical property requirements expected by professional tradespeople and maintenance technicians.

This screw is suited for use in machinery maintenance, equipment assembly, and heavy fabrication work where a flush or recessed fastener head is required. The 1-1/4-7 UNC coarse thread pattern is common in general industrial fastening, offering strong pull-out resistance in steel and ductile iron applications. The partial threading allows the unthreaded shank to act as a shoulder, providing precise alignment in close-tolerance bores. It is typically installed by millwrights, maintenance mechanics, and industrial technicians.

Key Features

• Alloy steel construction meets ASTM A574 mechanical property requirements for high-strength socket cap screws
• Black oxide finish provides mild corrosion resistance and reduces light reflection in precision assemblies
• 1-1/4-7 UNC coarse thread for strong engagement in steel and ductile iron tapped holes
• 6-1/2-inch length under head accommodates deep material stacks and thick flanges
• 7/8-inch hex drive accepts standard hex keys and socket drive tools
• Partially threaded shank assists alignment and functions as a shoulder in close-tolerance bores

Compatibility

Designed as an OEM-style replacement or direct-use fastener for industrial machinery, structural assemblies, and equipment requiring a 1-1/4-7 UNC high-strength socket cap screw per ASME/ANSI B18.3.

Installation Notes

Installation is typically performed by millwrights or maintenance mechanics using a calibrated torque wrench with a 7/8-inch hex bit. Verify that the tapped hole thread form and depth meet ASME/ANSI B18.3 requirements before installation. Clean and inspect the bore for damage or contamination prior to fastener insertion. Apply thread lubricant or anti-seize compound as specified by the equipment manufacturer to achieve accurate clamp load.