Value Collection D39057 Hex Head Cap Screw 3/8-16

Product Description

The VALUE COLLECTION D39057 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 screw delivers elevated tensile and proof load ratings compared to standard-grade fasteners. It features a 3/8-16 UNC thread size, a 1-3/4-inch length under head, and meets ASME B18.2.1 dimensional standards. Machinists, millwrights, maintenance technicians, and general tradespeople rely on Grade 8 hardware where vibration resistance and joint clamping force are critical.

This cap screw is suited for heavy equipment assembly, machinery mounting, structural steel connections, and similar applications where a high-strength inch-series fastener is required. The partial threading allows a smooth shank section to pass through clearance holes, improving shear resistance and alignment in bolted joints. This screw is sold individually with a minimum order quantity of 25 pieces, making it appropriate for both single-repair needs and small-batch production work.

Key Features

• Grade 8 steel construction for high tensile strength and proof load performance
• Zinc yellow dichromate finish provides corrosion resistance and identification as a high-strength fastener
• Partially threaded shank improves shear resistance in clearance-hole applications
• 3/8-16 UNC thread standard ensures broad compatibility with inch-series tapped holes
• Meets ASME B18.2.1 dimensional standards for hex head cap screws

Compatibility

Designed as an OEM-style replacement or standard fastener for applications requiring 3/8-16 UNC inch-series hex head cap screws in Grade 8 steel.

Installation Notes

Installation should be performed by a qualified mechanic, millwright, or maintenance technician using an appropriately sized hex wrench or socket. Always verify the mating tapped hole thread class and material before installation. De-energize, lock out, and tag out any equipment before disassembling bolted joints on powered machinery. Do not mix Grade 8 fasteners with lower-grade nuts or hardware without confirming the joint design allows it.