Value Collection MP39032 Hex Cap Screw 5/16-18 Grade 8 25pk

Product Description

The VALUE COLLECTION MP39032 is a Grade 8 steel hex head cap screw in a 5/16-18 UNC thread size with a 1-3/4 inch length under head. It features a zinc yellow dichromate finish that provides corrosion resistance and meets ASME B18.2.1 dimensional standards. The screw is partially threaded, making it suitable for applications where a clamped, unthreaded shank section is needed for alignment or shear strength. This fastener is used by millwrights, maintenance technicians, equipment assemblers, and general contractors working with structural and mechanical assemblies that require a high-strength imperial fastener.

This hex head cap screw is suited for heavy-duty mechanical, industrial, and structural applications where Grade 8 tensile strength is required. The partial thread design allows the unthreaded shank to bear shear loads while the threaded section engages the mating nut or tapped hole. It is commonly installed in machine frames, equipment mounting brackets, and structural steel assemblies. Sold in a package quantity of 25 per order.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• 5/16-18 UNC thread in a partially threaded configuration for shear-load applications
• Zinc yellow dichromate finish provides corrosion resistance
• Meets ASME B18.2.1 dimensional standards for hex head cap screws
• 1-3/4 inch length under head measured per ASME standard
• Sold in a convenient pack of 25 fasteners

Compatibility

Designed as a standard UNC hex head cap screw for use with 5/16-18 threaded nuts, inserts, or tapped holes in inch-system mechanical and structural assemblies.

Installation Notes

Installation should be performed by a qualified mechanic, millwright, or maintenance technician. Always verify that the mating thread, nut grade, and hole clearance are compatible with a Grade 8 fastener before installation. Use a calibrated torque wrench and follow the applicable torque specifications for the joint design and lubrication condition. Do not mix Grade 8 hardware with lower-grade mating components, as this can compromise joint integrity.