Value Collection HCI50750450G-020BX Hex Cap Screw 3/4-10 X 4-1/2 in

Product Description

The VALUE COLLECTION HCI50750450G-020BX is a partially threaded hex head cap screw sized 3/4-10 UNC x 4-1/2 inches under the head. Manufactured from Grade 5 steel with a hot-dipped galvanized finish, this fastener delivers reliable corrosion resistance for outdoor, structural, and mechanical applications. The partial threading allows the unthreaded shank to act as a bearing surface in bolted joints, which is useful where shear strength and precise clamping are required. Licensed tradespeople, contractors, and maintenance technicians working on HVAC equipment frames, electrical enclosures, plumbing support structures, and general mechanical assemblies will find this screw a standard-grade workhorse.

This fastener suits residential and commercial construction, equipment mounting, and structural assembly tasks where UNC-threaded connections in steel or wood substrates are specified. The 3/4-10 thread pitch is a coarse unified national thread, common in heavy mechanical and structural work. The 4-1/2-inch length under the head accommodates thicker material stacks, flanges, or multiple ply connections. Its hot-dipped galvanized coating makes it suitable for exterior exposure and treated-lumber contact where bare steel would corrode prematurely.

Key Features

• Grade 5 steel construction provides medium-strength tensile performance for structural fastening
• Hot-dipped galvanized finish delivers thick, durable corrosion protection suitable for outdoor and treated-lumber use
• Partial threading allows the unthreaded shank to carry shear loads and locate bolted joints precisely
• 3/4-10 UNC coarse thread for fast engagement and strong pull-out resistance in steel and wood
• 4-1/2-inch length under head accommodates thick material stacks and multi-ply connections
• Inch measurement system, compatible with standard SAE tooling

Compatibility

Designed as a standard UNC coarse-thread hex head cap screw for use with 3/4-10 nuts and tapped holes in steel, iron, or wood substrates common to mechanical, structural, and equipment-support applications.

Installation Notes

Installation should be performed by qualified mechanics, contractors, or tradespeople using a properly sized hex socket or open-end wrench. Always ensure the mating nut or tapped hole is also 3/4-10 UNC thread before driving. Apply appropriate anti-seize or thread lubricant when required by the application to prevent galling on the galvanized threads. Torque to the fastener specification appropriate for Grade 5 hardware and joint material as defined by applicable industry standards or engineering specifications.