Value Collection D39143 Hex Cap Screw 9/16-12x5 Grade 8

Product Description

The VALUE COLLECTION D39143 is a 9/16-12 UNC hex head cap screw measuring 5 inches in length under the head. Manufactured from Grade 8 steel with a zinc yellow dichromate finish, this fastener delivers high tensile strength and corrosion resistance suited for heavy-duty mechanical and structural assemblies. The partial threading configuration follows ASME B18.2.1 and SAE J429 standards, making it a recognized choice for critical bolted joints where grip length and clamping load matter. Machinists, millwrights, and maintenance technicians working in industrial, agricultural, and heavy equipment applications commonly specify Grade 8 hardware for these load-bearing connections.

This cap screw is appropriate for use in applications requiring high-strength inch-series fasteners with a coarse UNC thread form. The zinc yellow dichromate finish provides a baseline level of corrosion protection suitable for indoor mechanical assemblies, general industrial machinery, and equipment where the fastener may see moderate environmental exposure. It is sold individually, with a minimum order quantity of 10 pieces.

Key Features

• Grade 8 steel construction for high tensile and proof load capacity
• 9/16-12 UNC coarse thread form for broad compatibility with standard inch-series hardware
• Partially threaded shank provides a grip section for precise clamping in bolted joints
• Zinc yellow dichromate finish offers corrosion resistance and visual identification of Grade 8 rating
• Meets ASME B18.2.1 and SAE J429 standards for dimensional and mechanical compliance
• 5-inch length under head accommodates thicker stack-ups and structural assemblies

Compatibility

Designed as a standard inch-series replacement or new-installation hex head cap screw for use with any 9/16-12 UNC tapped hole or matching nut in heavy-duty mechanical and structural assemblies.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance technicians using a standard hex wrench or socket set. Always confirm the mating thread is 9/16-12 UNC before installation and inspect threads for damage or contamination. Follow torque specifications for Grade 8 fasteners as published by the equipment manufacturer or applicable engineering standards. Reuse of fasteners in critical joints should be evaluated against the original design requirements.