Value Collection 011573BR Hex Socket Cap Screw 1-1/4-7 Unc

Product Description

The VALUE COLLECTION 011573BR is a partially threaded hex socket cap screw designed for high-strength bolted assemblies requiring precise torque application through an internal hex drive. Manufactured from alloy steel with a black oxide coating, this fastener meets ASME/ANSI B18.3 and ASTM A574 standards, confirming its suitability for demanding industrial and mechanical applications. The 7/8-inch hex drive accommodates a standard hex key or Allen-type driver, and the 7-inch length under head provides ample grip for thick-stack or deep-clearance installations. Machinists, millwrights, and maintenance technicians install this type of fastener where a low-profile, recessed-drive cap screw is required.

This cap screw is suited for structural and mechanical assemblies in industrial, manufacturing, and heavy equipment maintenance environments. The 1-1/4-7 UNC thread size targets applications requiring coarse-thread engagement in steel or cast iron bores. The partial threading allows the unthreaded shank to act as a locating or shear feature within the joint. Typical installation scenarios include machinery frames, press components, fixture plates, and large structural brackets where high clamp load and bolt integrity are critical.

Key Features

• Alloy steel construction meets ASTM A574 for high tensile strength fastener performance
• Black oxide finish provides mild corrosion resistance and reduces light reflection in precision environments
• Partially threaded shank provides shear resistance and precise joint alignment
• 7/8-inch internal hex drive accommodates standard hex keys and power drive sockets
• Conforms to ASME/ANSI B18.3 dimensional standards for consistent fit and interchangeability
• 1-1/4-7 UNC coarse thread for reliable engagement in ferrous base materials

Compatibility

Designed as an OEM-style or aftermarket replacement hex socket cap screw for applications specifying a 1-1/4-7 UNC thread, 7-inch length under head, partially threaded, alloy steel fastener conforming to ASME/ANSI B18.3 and ASTM A574.

Installation Notes

Installation should be performed by a qualified machinist, millwright, or maintenance technician familiar with high-strength fastener procedures. Always ensure the mating threaded hole is clean, properly tapped to 1-1/4-7 UNC, and free of debris before installation. Apply appropriate thread lubricant or anti-seize compound as required by the assembly specification. Use a calibrated torque wrench with a matching 7/8-inch hex bit to achieve the required clamp load without overdriving the fastener.