Value Collection 97246 Hex Head Cap Screw 1-1/4-7 X 4-1/2 in Grade 5

Product Description

The VALUE COLLECTION 97246 is a partially threaded hex head cap screw designed for heavy-duty fastening applications in mechanical, structural, and industrial assemblies. It features a 1-1/4-7 UNC thread size and a 4.5-inch length under head, manufactured from Grade 5 steel in an uncoated finish. This fastener meets ASME B18.2.1 standards, making it a reliable choice for trade professionals who require dimensional consistency and material traceability. The partial threading allows for improved clamp load across thick joint stacks, a common requirement in structural connections and machinery mounting.

This cap screw is suited for use in general industrial, mechanical, and construction trade applications where large-diameter UNC fasteners are specified. Typical install scenarios include machinery base mounting, structural steel connections, equipment frames, and heavy-duty bracket assemblies. It is sold in a package quantity of 5, making it practical for both single-unit repairs and small-run installations requiring matched fastener sets.

Key Features

• 1-1/4-7 UNC thread size for high-load fastening in large-diameter applications
• 4.5-inch length under head accommodates thick joint and stack-up requirements
• Grade 5 steel construction provides minimum tensile strength per SAE specifications
• Partially threaded shank improves clamp load and shear resistance in structural joints
• Uncoated finish suitable for use where secondary coating or plating will be applied
• Meets ASME B18.2.1 dimensional standards for consistent fitment and interchangeability

Compatibility

Designed as a standard UNC hex head cap screw per ASME B18.2.1, compatible with any application specifying a 1-1/4-7 UNC partially threaded hex cap screw in Grade 5 steel.

Installation Notes

Installation is typically performed by millwrights, ironworkers, or mechanical contractors using standard hex wrenches or impact tooling sized for a 1-1/4-inch hex head. Always verify mating thread condition and ensure the tapped hole or nut meets the same UNC thread standard before installation. Follow applicable code requirements, including AISC specifications for structural steel applications where relevant. De-energize and lock out equipment before performing any fastener replacement or torquing in a live mechanical assembly.