Hex Head Cap Screws Grade 5 Steel, Plain Finish, Fine Thread, 5/8-18 x 3-3/4. A high-strength fastener designed for dependable performance in automotive, machinery, and industrial assemblies.

Manufactured from Grade 5 steel, these cap screws deliver excellent tensile strength and durable service in demanding environments. The plain finish keeps the fastener versatile for various coatings and finishes you may apply on site, while the fine thread provides precise clamping and smooth engagement in thinner or softer materials.

Key benefits include strong head drive, compatibility with standard hex tools, and reliable torque characteristics, making them a go-to choice for equipment maintenance, repair, and assembly projects.

Features

• Material: Grade 5 steel for high strength and durability
• Finish: Plain (uncoated) for flexible use
• Thread: Fine thread 5/8-18 for precise engagement
• Size: 5/8 inch diameter, 18 threads per inch
• Length: 3-3/4 inches
• Head: Hex head Cap Screw for easy installation with standard wrenches or sockets

Applications

• Ideal for automotive, machinery, and industrial equipment assemblies
• Suitable for where a strong, secure fastener with accurate pitch is required
• Can be used with thread lubricant for best performance

Technical Specifications

• Diameter: 5/8″ (0.625″)
• Thread pitch: 18 TPI (fine thread)
• Length: 3-3/4″
• Finish: Plain (uncoated)
• Material: Grade 5 steel
• Head style: Hex head