Value Collection 451390BR Hex Head Cap Screw 1-14x14 Grade 8

Product Description

The VALUE COLLECTION 451390BR is a Grade 8 steel hex head cap screw designed for heavy-duty fastening applications requiring high tensile strength and precise thread engagement. This partially threaded fastener measures 14 inches under the head with a 1-14 UNF thread size, making it well suited for bolted connections where fine thread pitch and clamping force are critical. The bright, uncoated finish leaves the base steel exposed, which is standard practice where plating would alter dimensional tolerances or where subsequent coating will be applied on-site. Manufactured to ASME B18.2.1, this screw meets recognized dimensional and mechanical standards used across industrial and commercial fabrication.

This fastener is used in structural assemblies, heavy equipment, machinery frames, and fabricated steel connections that require a fine-thread hex cap screw in a large diameter. Partially threaded shanks are the correct choice when a smooth bearing surface under the head is needed to resist shear loads or when through-bolting thick material. The 1-1/2 inch hex key drive size accommodates standard industrial wrenches and impact tooling. Typical installers include millwrights, ironworkers, pipefitters, and heavy equipment technicians working in industrial or commercial environments.

Key Features

• Grade 8 steel construction provides high tensile and proof load ratings required for structural and heavy equipment fastening
• 1-14 UNF thread specification delivers finer pitch for improved thread engagement and clamp load retention
• Partially threaded shank supports shear load resistance in thick-material through-bolt applications
• Bright, uncoated finish maintains dimensional integrity per ASME B18.2.1 tolerances
• 1-1/2 inch hex drive size is compatible with standard heavy-duty wrenches and industrial impact tooling
• Meets ASME B18.2.1 dimensional standard for hex cap screws

Compatibility

Designed as an OEM-style and aftermarket replacement for Grade 8 UNF hex head cap screws conforming to ASME B18.2.1 in 1-14 thread size and 14-inch length under head.

Installation Notes

Installation should be performed by qualified tradespeople familiar with bolted joint specifications and torque requirements for Grade 8 fasteners. Always consult the applicable engineering specification or equipment service manual for required clamp load and torque values before installation. Verify that mating threads are clean and free of damage before assembly. Apply thread lubricant or anti-seize only if specified by the joint design, as lubrication alters the torque-to-clamp-load relationship.