[10 PKG] Hex Head Cap Screws Grade 8 Steel Plain 1 3/8-6 x 5 1/2″” (PT)

Hex Head Cap Screws Grade 8 Steel Plain 1 3/8-6 x 5 1/2″ (PT) are high-strength fasteners designed for demanding industrial, construction, and automotive applications. Made from Grade 8 steel with a plain finish, these hex head cap screws deliver exceptional tensile and shear strength to secure heavy components with confidence.

Built for durability and reliability, these fasteners pair a rugged hex drive with a plain finish suitable for clean or painted surfaces. They are ideal for equipment assemblies, machinery, structural joints, and other heavy-duty connections where maximum clamping force is required.

• Material: Grade 8 steel for superior strength
• Finish: Plain (uncoated) for versatile use across environments
• Head type: Hex head for easy tightening with standard wrenches or sockets
• Drive: Hex
• Thread size: 1-3/8″-6 (1 3/8 in diameter, 6 threads per inch)
• Length: 5-1/2 in

Technical Specifications

• Diameter and thread: 1-3/8″-6
• Length: 5-1/2 in
• Material: Grade 8 steel
• Finish: Plain
• Grade: 8

Whether you’re outfitting heavy equipment, industrial machinery, or structural assemblies, these Grade 8 hex head cap screws provide the dependable strength needed to keep components secure under load. Add these plain-finish fasteners to your toolkit for reliable performance in tough environments.