Value Collection D30145-21/4 Hex Cap Screw 5/8-11 X 2-1/4

Product Description

The VALUE COLLECTION D30145-21/4 is a partially threaded hex head cap screw manufactured from Grade 5 steel with a zinc-plated finish. It carries a 5/8-11 UNC thread and a length under head of 2-1/4 inches. The zinc plating provides baseline corrosion resistance for general-purpose fastening in exposed or lightly harsh environments. This fastener conforms to ASME B18.2.1 dimensional standards, making it a reliable choice for structural and mechanical assemblies where consistent thread engagement and head geometry are required. Plumbers, pipefitters, HVAC technicians, electricians, and general maintenance trades install this type of fastener in equipment mounting, bracket attachment, and panel securing applications.

This hex head cap screw is suited for residential and light commercial mechanical installations where a 5/8-11 UNC partially threaded fastener is called for. Partial threading allows for a smooth shank section that is useful in applications requiring a clamping grip without thread engagement through the full joint thickness. It is appropriate for use in steel-to-steel connections, equipment bases, framing brackets, and similar structural fastening tasks commonly encountered in trade service work.

Key Features

• 5/8-11 UNC thread for compatibility with standard inch-series tapped holes and nuts
• 2-1/4 inch length under head provides adequate grip for medium-thickness assemblies
• Partially threaded shank allows smooth-bore clamping in multi-layer joints
• Grade 5 steel construction meets medium-strength fastener requirements
• Zinc-plated finish offers baseline corrosion resistance in general service conditions
• Conforms to ASME B18.2.1 for consistent head dimensions and thread tolerances

Compatibility

Designed for use with standard 5/8-11 UNC tapped holes and hex nuts in inch-series mechanical assemblies conforming to ASME B18.2.1 specifications.

Installation Notes

Installation requires a standard 15/16-inch hex wrench or socket appropriate for a 5/8-11 fastener. Ensure mating threads are clean and free of debris before installation. Do not exceed the rated proof load for Grade 5 fasteners when applying torque. Always de-energize and lock out equipment before fastening or removing hardware on powered systems.