Value Collection D39151 Hex Cap Screw 5/8-11 X 2-1/2 in Grade 8

Product Description

The VALUE COLLECTION D39151 is a Grade 8 steel hex head cap screw with a 5/8-11 UNC thread profile and a 2-1/2 inch length under head. It is partially threaded and finished with a zinc yellow dichromate coating that provides corrosion resistance in general industrial and mechanical applications. This fastener meets ASME B18.2.1 dimensional standards, making it a dependable choice for structural and equipment assembly work where high-strength fasteners are required. Machinists, millwrights, and maintenance technicians commonly install this screw in fabrication, machine mounting, and heavy equipment repair contexts.

This cap screw is suited for high-load bolted joint applications in industrial, manufacturing, and mechanical service environments. The partial thread shank provides a bearing surface that resists shear loads, making it appropriate for connections where the bolt passes through clearance holes in structural members or mechanical housings. The 5/8-11 UNC thread is a standard coarse-thread size widely used across industrial and OEM equipment platforms.

Key Features

• Grade 8 steel construction for high tensile and proof load capacity
• 5/8-11 UNC coarse thread for broad tool and hardware compatibility
• Partially threaded shank resists shear loads in clearance-hole assemblies
• Zinc yellow dichromate finish provides corrosion resistance
• Meets ASME B18.2.1 dimensional standard for consistent fitment
• 2-1/2 inch length under head suits medium-depth structural joints

Compatibility

Designed as a standard 5/8-11 UNC hex head cap screw conforming to ASME B18.2.1, suitable for use in any application requiring a Grade 8 partially threaded fastener in that thread size and length.

Installation Notes

Install using a standard hex socket or open-end wrench sized for a 5/8-11 fastener. De-energize and lock out all equipment before fastener service on live machinery per applicable safety codes. Do not reuse fasteners that show signs of thread damage, necking, or corrosion. Torque to the joint engineer's specification for Grade 8 fasteners at this diameter — no torque value is implied by this listing.