Metric 10.9 Hex Head Cap Screw with Plain Finish
Metric Hex Head Cap Screws, Grade 10.9 with Plain Finish
The Metric Hex Head Cap Screw Grade 10.9 with Plain Finish is a high-strength fastener engineered for demanding industrial, mechanical, and structural applications requiring superior tensile and yield strength. Manufactured from medium carbon alloy steel and heat-treated through quenching and tempering, these fasteners meet ISO 898-1, DIN 933, and DIN 931 standards, providing a tensile strength of 1,040 MPa and a yield strength of 940 MPa. This makes Grade 10.9 screws ideal for automotive, heavy machinery, power transmission, and tooling applications where strength, accuracy, and reliability are critical.
The hexagonal head design enables secure wrench engagement, allowing for consistent torque and high clamping force. The plain finish—a natural, uncoated steel surface—offers excellent frictional engagement for controlled torque readings and is preferred in applications where components are assembled in dry, indoor, or controlled environments. It also allows for post-installation treatments such as plating, painting, or oiling, giving engineers flexibility in custom finishing requirements.
These fasteners are frequently used in engine components, machine frames, press assemblies, and precision equipment, where dependable load retention and resistance to shear and fatigue are vital. When paired with Class 10 nuts and hardened flat washers, they provide strong, vibration-resistant joints that maintain integrity under repeated stress and thermal variation.
Available in metric diameters from M5 to M36, with coarse and fine thread options, each screw is manufactured to tight dimensional tolerances for precision fitment. Proudly produced to international performance standards, the Metric Grade 10.9 Hex Head Cap Screw with Plain Finish delivers uncompromising quality, high mechanical strength, and long-term reliability—making it the trusted choice for professionals who demand performance and consistency in every fastening application.