Value Collection HCI51250550G-001BX Hex Cap Screw Grade 5

Product Description

The VALUE COLLECTION HCI51250550G-001BX is a partially threaded hex head cap screw engineered for heavy-duty fastening applications. It features a 1-1/4-7 UNC thread and a 5-1/2 inch length under head, manufactured from Grade 5 steel with a hot-dipped galvanized finish that provides corrosion resistance in exposed or outdoor environments. The partial thread configuration allows for clamping force without thread engagement along the full shank, making it well suited for joints where a smooth shank section is required. Tradespeople in HVAC, plumbing, electrical, and general mechanical contracting will find this fastener appropriate for structural and equipment-mounting tasks.

This hex head cap screw is suited for use in industrial, commercial, and residential construction environments where a large-diameter, high-strength fastener is needed. The hot-dipped galvanized coating makes it appropriate for exterior installations, treated lumber contact, and other environments where moisture exposure is a factor. Typical applications include equipment mounting, structural steel connections, and mechanical assembly work requiring UNC-standard hardware.

Key Features

• 1-1/4-7 UNC thread form for compatibility with standard inch-system hardware
• 5-1/2 inch length under head measured from bearing face to tip
• Grade 5 steel construction provides defined tensile and proof load ratings for structural use
• Hot-dipped galvanized finish delivers corrosion protection for exterior and high-moisture environments
• Partially threaded shank allows for a bearing shank section where reduced thread engagement is required

Compatibility

Designed as an OEM-style or aftermarket replacement hex head cap screw for applications requiring 1-1/4-7 UNC inch-series fasteners with a Grade 5 strength rating and galvanized finish.

Installation Notes

Installation should be performed by a qualified tradesperson using the appropriate hex socket or open-end wrench sized for a 1-1/4-7 fastener. Follow applicable torque specifications from the equipment manufacturer or structural engineer for Grade 5 fasteners at this diameter. Ensure mating nut threads and tapped hole threads are clean and free of debris before installation. Use of thread lubricant or anti-seize compound should be evaluated based on the application and engineer of record requirements.