Value Collection 39036 Hex Head Cap Screw 5/16-18 2-3/4 in Grade 8

Product Description

The VALUE COLLECTION 39036 is a partially threaded hex head cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. Manufactured from Grade 8 steel with a zinc yellow dichromate finish, this fastener delivers superior tensile strength and corrosion resistance compared to standard Grade 2 or Grade 5 hardware. The 5/16-18 UNC thread profile and 2-3/4-inch length under head make it suitable for through-bolt and blind-hole configurations where load-bearing reliability is critical. Compliance with ASME B18.2.1 ensures dimensional consistency across the batch.

This cap screw is commonly used in heavy equipment, machinery frames, conveyor systems, and industrial fabrication where Grade 8 strength is specified. The partial threading design allows the unthreaded shank to act as a shoulder, providing precise shear load transfer at joint interfaces. It is appropriate for use in both OEM assembly and field maintenance scenarios handled by millwrights, maintenance technicians, and general industrial tradespeople. Sold in a package quantity of 100 units.

Key Features

• Grade 8 steel construction for high tensile and proof load requirements
• Zinc yellow dichromate finish provides corrosion resistance and visual identification
• Partially threaded shank supports shear load transfer at fastened joints
• 5/16-18 UNC thread for broad compatibility with standard inch-series nuts and tapped holes
• Meets ASME B18.2.1 dimensional standards for consistent fitment
• Package quantity of 100 units supports production and bulk service applications

Compatibility

Designed for use with standard 5/16-18 UNC inch-series hex nuts, flange nuts, and tapped holes conforming to ASME dimensional standards in Grade 8 fastener applications.

Installation Notes

Installation is typically performed by millwrights, maintenance technicians, or mechanical tradespeople using standard hex wrenches or impact drivers sized for the fastener head. Always verify hole alignment and thread engagement before applying torque. Grade 8 fasteners require hardened washers under the head and nut to prevent surface damage and maintain clamp load. Follow applicable torque specifications from the equipment manufacturer or referenced engineering standards for the specific joint configuration.