Value Collection D39141 Hex Head Cap Screw 9/16-12 X 4 in

Product Description

The VALUE COLLECTION D39141 is a 9/16-12 UNC hex head cap screw manufactured from Grade 8 steel with a zinc yellow dichromate finish. At 4 inches in length under the head and partially threaded, this fastener is built for high-strength bolted joint applications where tensile load and torque resistance matter. The Grade 8 rating places it among the highest-strength SAE fastener grades available for inch-series bolting. The zinc yellow dichromate finish provides a baseline level of corrosion resistance. This screw is manufactured to ASME B18.2.1 dimensional standards, making it a known-quantity for engineers, millwrights, and maintenance mechanics working to spec.

This fastener is suited for heavy equipment assembly, structural mechanical joints, industrial machinery, and maintenance-repair-operations (MRO) work requiring high-strength inch-series bolting. Partial threading is appropriate for applications where the unthreaded shank bears shear load or where a precise grip length is required. Typical installers include industrial maintenance technicians, millwrights, and mechanical contractors working on steel-to-steel bolted connections.

Key Features

• Grade 8 steel construction for high tensile and proof load ratings
• 9/16-12 UNC thread form per standard inch-series coarse pitch
• 4-inch length under head with partial threading for shear-bearing shank applications
• Zinc yellow dichromate finish for baseline corrosion resistance
• Manufactured to ASME B18.2.1 dimensional standard for consistent fitment

Compatibility

Designed for use in standard 9/16-inch clearance holes in steel-to-steel bolted assemblies requiring high-strength inch-series UNC fasteners per ASME B18.2.1.

Installation Notes

Installation should be performed by qualified mechanical or maintenance personnel familiar with proper torque practices for Grade 8 fasteners. Always use a properly rated torque wrench and a hardened flat washer under the head when specified by the joint design. Do not substitute Grade 8 fasteners with lower-grade hardware in structural or high-load applications. Consult the equipment manufacturer or structural engineer for joint-specific torque requirements.