Value Collection D39408 Hex Head Cap Screw 1/2-20 X 2 in

Product Description

The VALUE COLLECTION D39408 is a Grade 8 steel hex head cap screw with a 1/2-20 UNF thread size and a 2-inch length under head. Partially threaded and finished in zinc yellow dichromate, this fastener meets ASME B18.2.1 dimensional standards. Grade 8 steel provides high tensile strength suited to demanding mechanical and structural connections. The zinc yellow dichromate coating offers corrosion resistance in environments where bare steel would be vulnerable. This screw is a standard inch-measurement fastener installed by mechanics, millwrights, pipefitters, and general tradespeople across industrial, commercial, and heavy equipment applications.

This hex head cap screw is suited to structural assemblies, machinery mounting, equipment frames, and heavy-duty mechanical joints requiring a high-strength 1/2-20 UNF fastener. The partial threading allows the unthreaded shank to bear shear loads, making it appropriate for bolted connections where shank engagement through joint members is required. It is sold individually with a minimum order quantity of 25 pieces.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• 1/2-20 UNF thread — fine thread series for improved thread engagement and vibration resistance
• 2-inch length under head per ASME B18.2.1 standard
• Partially threaded shank suitable for shear-load bearing applications
• Zinc yellow dichromate finish for corrosion resistance
• Inch measurement system; compliant with ASME B18.2.1

Compatibility

Designed as a standard 1/2-20 UNF Grade 8 hex head cap screw for use in inch-system mechanical assemblies requiring ASME B18.2.1 compliant fasteners.

Installation Notes

Installation should be performed by a qualified mechanic or tradesperson using an appropriate hex wrench or socket set. Always verify thread engagement and joint clamping requirements before torquing. De-energize and lock out any machinery before replacing fasteners in live equipment. Do not mix inch and metric fasteners in the same threaded assembly.