Value Collection R52001015 Hex Head Cap Screw 1-1/4-7 Unc

Product Description

The VALUE COLLECTION R52001015 is a partially threaded hex head cap screw intended for general-purpose mechanical fastening applications. It is manufactured from Grade 2 steel with a zinc-plated finish that provides basic corrosion resistance in dry to mildly humid environments. The fastener measures 4 inches in length under the head with a 1-1/4-7 UNC thread form, and the hex drive measures 1-7/8 inches across the flats. This screw meets ASME B18.2.1 and SAE J429 dimensional and grade standards, making it a reliable choice for structural and mechanical assemblies where a partially engaged thread length is required.

This cap screw is suited for a wide range of trade and industrial assembly applications including HVAC equipment mounting, electrical enclosure fabrication, plumbing support structures, and general mechanical frameworks. The 1-1/4-7 UNC thread size is a coarse-thread series, commonly used in structural steel connections where quick engagement and resistance to cross-threading are priorities. Partial threading leaves a smooth shank below the head to allow for shear loading in appropriate joint configurations.

Key Features

• Partially threaded shank supports shear-loaded joint configurations
• 1-1/4-7 UNC coarse-thread series for fast engagement and reduced cross-threading risk
• Grade 2 steel construction meets SAE J429 mechanical requirements
• Zinc-plated finish provides basic corrosion protection in dry to mildly humid conditions
• 1-7/8 inch hex flat-to-flat dimension accommodates standard industrial wrenching
• Conforms to ASME B18.2.1 dimensional standards

Compatibility

Designed as a standard UNC hex head cap screw suitable for use in any application requiring a 1-1/4-7 UNC coarse-thread fastener conforming to ASME B18.2.1 dimensional specifications.

Installation Notes

Installation should be performed by a qualified mechanic or technician using a properly sized open-end, box-end, or socket wrench matched to the 1-7/8 inch hex. Always verify that the mating tapped hole or nut meets the same thread specification and grade requirements before assembly. De-energize and lockout any electrical, pneumatic, or mechanical systems before fastening components in live assemblies. Do not exceed the joint clamping requirements specified in the relevant equipment or structural drawings.