Value Collection HCI51750550-001BX Hex Head Cap Screw

Product Description

The VALUE COLLECTION HCI51750550-001BX is a partially threaded hex head cap screw designed for heavy fastening applications where a controlled grip length is required. It is manufactured from Grade 5 steel with a bright, uncoated finish and follows the Unified National Coarse (UNC) thread standard. At 1-3/4-5 thread size and 5-1/2 inches under the head, this fastener is suited for large structural and mechanical assemblies. Licensed tradespeople, millwrights, and industrial maintenance technicians install this type of fastener where clamped joint integrity is essential. Weight is approximately 1 pound per unit.

This cap screw is used in commercial and industrial mechanical assemblies, structural steel connections, heavy equipment fabrication, and maintenance repair work where a UNC-threaded, partially threaded bolt is specified. The uncoated finish is appropriate for dry indoor environments or applications where a separate corrosion protection treatment will be applied after installation. It ships as a single unit.

Key Features

• Grade 5 steel construction provides higher tensile strength than standard Grade 2 fasteners
• Partially threaded shank allows precise grip-length control in clamped joints
• UNC thread standard ensures broad compatibility with inch-system nuts and tapped holes
• Bright, uncoated finish for applications requiring post-installation surface treatment or dry indoor use
• Hex head drive accepts standard hex sockets and open-end wrenches

Compatibility

Designed for use with 1-3/4-5 UNC inch-system hex nuts and tapped holes conforming to Unified National Coarse thread specifications.

Installation Notes

Installation should be performed by a qualified mechanic, millwright, or maintenance technician following applicable structural and mechanical codes. Always verify thread engagement depth and use a calibrated torque wrench to achieve the specified clamp load for Grade 5 fasteners as defined by the relevant joint design or equipment service manual. Inspect mating threads and bearing surfaces for damage before installation. Do not impact-drive this fastener without confirming thread integrity.