Value Collection 011575BR Hex Socket Cap Screw 1-1/4-7 Unc

Product Description

The VALUE COLLECTION 011575BR is a partially threaded hex socket cap screw designed for high-load fastening applications in industrial and mechanical assembly. It features a 1-1/4-7 UNC thread size and an 8-inch length under the head, making it well suited for thick-section joints and structural connections. The screw is driven with a 7/8-inch hex key. Constructed from alloy steel with a black oxide coating, it delivers the hardness and shear strength required for demanding installations. Licensed trades and maintenance professionals working with heavy equipment, machinery, or structural assemblies will find this fastener meets ASME/ANSI B18.3 and ASTM A574 standards.

This cap screw is used in industrial machinery assembly, heavy fabrication, and mechanical maintenance where a high-strength, large-diameter fastener is required. The 1-1/4-7 UNC coarse thread engages well in steel and cast-iron tapped holes. The partial threading allows the unthreaded shank to act as a close-tolerance alignment feature in precision-bored holes. It is appropriate for both shop fabrication environments and field maintenance of large mechanical equipment.

Key Features

• 1-1/4-7 UNC coarse thread for reliable engagement in steel and cast-iron tapped bores
• 8-inch length under head accommodates thick-section structural connections
• Partially threaded shank for close-tolerance alignment in precision holes
• 7/8-inch hex drive accepts standard hex keys and socket drive tooling
• Alloy steel construction provides high tensile and shear strength
• Black oxide finish offers mild corrosion resistance and reduced surface glare

Compatibility

Designed as an OEM-style replacement or direct-use fastener for industrial machinery, heavy fabrication, and mechanical assembly applications requiring a 1-1/4-7 UNC partially threaded hex socket cap screw per ASME/ANSI B18.3 and ASTM A574.

Installation Notes

Installation of large-diameter socket cap screws typically requires a calibrated torque wrench and the correct 7/8-inch hex key or drive socket to avoid cam-out and fastener damage. Always verify that the tapped hole is clean, free of debris, and threaded to the correct depth before installation. Follow applicable industry torque specifications for the joint material and fastener grade. Lubrication of threads may be required depending on the joint design and applicable engineering specification.