Value Collection 440100PR Hex Cap Screw 5/16-18 X 1-3/4 in Grade L9

Product Description

The VALUE COLLECTION 440100PR is a partially threaded hex head cap screw designed for industrial and mechanical fastening applications. Manufactured from Grade L9 steel, this fastener delivers high tensile strength suitable for demanding bolted connections. The zinc yellow dichromate finish provides corrosion resistance while also serving as a visual indicator of the coating type. The screw uses a 5/16-18 UNC thread pattern — a coarse-thread standard widely specified in structural and mechanical assemblies — and measures 1-3/4 inches under the head. A 1/2-inch hex key size allows installation with standard combination wrenches or hex sockets. Licensed trades and maintenance professionals working in manufacturing, construction, and equipment servicing will find this a dependable OEM-style replacement or assembly fastener.

This cap screw is suited for use in steel-to-steel bolted joints, machinery frames, brackets, and structural sub-assemblies where a partially threaded shank is preferred for accurate alignment or shear resistance. The 5/16-18 UNC thread form is compatible with standard UNC hex nuts, flange nuts, and threaded inserts of the same specification. Partial threading leaves a smooth shank section beneath the head, which is advantageous when the fastener passes through a clearance hole before engaging the threaded portion of the mating component.

Key Features

• Grade L9 steel construction for high tensile strength in demanding bolted assemblies
• Zinc yellow dichromate finish for corrosion resistance and coating identification
• Partially threaded shank for improved alignment and shear load transfer
• 5/16-18 UNC coarse-thread form compatible with standard UNC hardware
• 1/2-inch hex drive accepts standard wrenches and sockets
• Inch-system dimensions for use in domestic and imperial-standard assemblies

Compatibility

Designed as a standard UNC hex head cap screw for use with 5/16-18 UNC nuts, threaded inserts, and tapped holes conforming to inch-system coarse-thread specifications.

Installation Notes

Installation is typically performed by maintenance technicians, millwrights, or mechanical contractors using a standard combination wrench or socket set sized for a 1/2-inch hex. Ensure the mating threaded hole or nut is clean and free of debris before installation. Do not mix inch-system and metric fasteners in the same assembly. Follow applicable equipment manufacturer torque specifications or relevant industry standards when tightening.