[20 PKG] Hex Head Cap Screws Grade 5 Steel Plain Fine Thread 1-1/8-12 x 5-1/2

Choose enduring strength and precise fit with our Hex Head Cap Screws Grade 5 Steel Plain Fine Thread 1-1/8-12 x 5-1/2. Built for dependable performance in machine shops, manufacturing, and equipment maintenance, these screws pair a robust Grade 5 steel core with a plain finish that keeps the profile versatile for indoor or protected outdoor use.

Key features

• Head type: Hex Head Cap Screw for easy driving with standard wrenches or sockets.
• Material: Grade 5 steel — quenched and tempered for improved strength and durability.
• Finish: Plain (uncoated) finish for clean, unobtrusive appearance and broad compatibility.
• Thread detail: Fine thread 1-1/8-12, ideal for precise, high-torque fastening on thin or soft materials.
• Size: 1-1/8 in major diameter with 5-1/2 in length; threads per inch: 12 TPI.
• Compatibility: Designed to pair with standard hex nuts and washers of the same size class.

Applications include machinery assembly, automotive repair, equipment fabrication, and structural projects where strong, secure fastenings are essential. The Grade 5 steel provides a solid balance of strength, ductility, and impact resistance, making these screws a reliable choice for demanding environments while the plain finish keeps cost down and simplifies inspection when used in indoor settings.

To ensure optimal performance, pair these screws with compatible nuts and washers and drive them to the recommended torque for your material and joint design. Add these Hex Head Cap Screws to your toolkit for a dependable, long-lasting fastening solution.