Value Collection -30172-4 Hex Cap Screw 1-1/8-7 X 4 in Grade 5

Product Description

The VALUE COLLECTION -30172-4 is a hex head cap screw designed for heavy-duty fastening in structural, mechanical, and equipment assembly applications. Built to Grade 5 steel standards and finished with a zinc plating for corrosion resistance, this fastener meets ASME B18.2.1 and SAE J429 specifications. The 1-1/8-7 UNC thread profile with a 4-inch length under head and partial threading makes it suitable for through-bolt and clamped-joint applications where a bearing surface grip is required. Mechanical contractors, millwrights, and equipment installers working with inch-system fastener specifications will find this screw a straightforward fit for standard structural connections.

This hex cap screw is used across a wide range of trade and industrial applications including HVAC equipment mounting, mechanical equipment bases, structural steel connections, and general maintenance repair operations. The partial threading allows the unthreaded shank to bear shear loads in the joint, which is appropriate for bolted connections subject to lateral stress. It is sold in a package quantity of 10, with a minimum order quantity of 1 package.

Key Features

• Grade 5 steel construction meets SAE J429 mechanical property requirements for medium-strength fastening
• Zinc-plated finish provides baseline corrosion resistance for general indoor and sheltered outdoor use
• Partially threaded shank allows shear load transfer across the joint interface
• 1-1/8-7 UNC thread profile conforms to ASME B18.2.1 inch-system hex cap screw standards
• 4-inch length under head suits thick flange, base plate, and structural clamping applications
• Sold in packs of 10 with no minimum beyond one package

Compatibility

Designed as a standard inch-system hex head cap screw for use in any application requiring a 1-1/8-7 UNC partially threaded fastener conforming to ASME B18.2.1 and SAE J429.

Installation Notes

Installation should be performed by a qualified mechanic, millwright, or licensed contractor following applicable structural or equipment specifications. Use a properly sized hex socket or open-end wrench rated for the fastener size. Torque to the value specified by the equipment manufacturer or structural engineer of record — do not estimate torque without a reference specification. Inspect threads and mating nut or tapped hole for damage before installation.