Metric 8.8 Hex Head Cap Screw with Plain Finish

Metric Hex Head Cap Screws, Grade 8.8 with Plain Finish

The Metric Hex Head Cap Screw Grade 8.8 with Plain Finish is a durable, high-performance fastener engineered for applications that demand precision, strength, and reliability. Manufactured from medium carbon steel and quenched and tempered to meet ISO 898-1, DIN 933, and DIN 931 standards, Grade 8.8 screws deliver an impressive tensile strength of 830 MPa and a yield strength of 640 MPa. These qualities make them ideal for industrial machinery, construction, automotive, and equipment assembly where dependable joint integrity is essential.

The hexagonal head design allows for easy installation with standard metric wrenches, ensuring secure tightening and consistent torque application. The plain finish offers a natural steel surface without additional coating, making it ideal for controlled environments or for users who wish to apply their own surface treatment, such as plating, painting, or lubrication. This bare finish also provides excellent frictional engagement between threads and mating parts, ensuring uniform clamping force and reliable mechanical performance.

Metric Grade 8.8 Hex Head Cap Screws are widely used in mechanical, automotive, and structural applications where high strength and precise alignment are required. They are typically paired with Class 8 or Class 10 nuts and hardened flat washers to achieve balanced load distribution and superior joint retention under vibration or thermal expansion.

Available in metric diameters from M5 to M36, these screws are produced in a variety of lengths and thread pitches (coarse and fine) to suit nearly any design requirement. Proudly manufactured to international standards, the Grade 8.8 Metric Hex Head Cap Screw with Plain Finish remains a trusted choice for engineers and technicians who require strength, consistency, and performance in every fastening application.