[50 PKG] Hex Head Cap Screws Grade 5 Steel Zinc Plated 5/16-18 X 3-1/4

Hex Head Cap Screws Grade 5 Steel Zinc Plated 5/16-18 X 3-1/4 are built for heavy-duty fastening in demanding applications. With a durable Grade 5 steel core and a corrosion-resistant zinc plating, these screws deliver reliable performance in machinery, automotive, and construction projects.

Featuring a hex head for easy driving with standard wrenches or sockets, these screws use a 5/16-18 UNC thread and measure 3-1/4 inches in length, providing strong clamping power even in tight spaces.

Key Features

• Material: Grade 5 steel for high strength
• Finish: Zinc plating for corrosion resistance in indoor/outdoor environments
• Thread: 5/16-18 UNC coarse thread
• Length: 3-1/4 inches
• Head type: Hex head for reliable torque and quick installation
• Drive: Standard hex drive for common tools
• Applications: Suitable for machinery, automotive assemblies, equipment mounting, and structural fastenings

Whether you’re assembling heavy equipment, repairing a trailer, or fabricating metal components, these hex head cap screws deliver dependable strength and ease of use. Pair them with the appropriate nut and washer for a secure, lasting fit.

Enhance your fastener toolkit with these Grade 5 hex head cap screws in 5/16-18 x 3-1/4 inches for robust, durable connections.