Metric 8.8 Hex Head Cap Screw with Plain Finish
Metric Hex Head Cap Screws Grade 8.8 with Plain Finish
Metric Hex Head Cap Screws Grade 8.8 with a plain finish are engineered to deliver reliable strength, precision, and consistency for demanding industrial and mechanical applications. Designed to meet international engineering standards, these fasteners are widely used in machinery, automotive systems, construction, and equipment assembly where dependable joint integrity is essential.
High-Strength Construction to Global Standards
Manufactured from quenched and tempered medium carbon steel, Grade 8.8 hex head cap screws comply with ISO 898-1, DIN 933, and DIN 931 specifications. They provide a minimum tensile strength of approximately 830 MPa and a yield strength of 640 MPa, offering an excellent balance of strength and ductility. This makes them ideal for applications exposed to vibration, dynamic loads, and repeated stress cycles while maintaining secure clamping force.
Plain Finish for Precision and Flexibility
The plain, uncoated finish provides a natural steel surface that preserves the fastener’s original mechanical properties. This finish is well suited for controlled or indoor environments where corrosion protection is not required. Plain finish Grade 8.8 fasteners also allow for accurate torque readings during installation and provide excellent frictional engagement between threads and mating surfaces. Additionally, they are ideal for secondary processes such as painting, plating, lubrication, or custom coatings.
Hex Head Design and Metric Compatibility
The six-sided hex head design supports easy installation using standard metric wrenches or sockets, ensuring precise torque control and secure tightening. Metric Grade 8.8 hex head cap screws are commonly paired with Class 8 or Class 10 nuts and hardened flat washers to ensure proper load distribution and long-term joint stability.
Size Range and Application Versatility
Available in metric diameters ranging from M5 to M36, these fasteners are produced in a wide selection of lengths and both coarse and fine thread pitches. This versatility makes them suitable for nearly any mechanical or structural design requirement.
Common Applications for Grade 8.8 Hex Head Cap Screws
Industrial machinery and equipment assembly
Automotive and mechanical systems
Structural and construction connections
OEM manufacturing and maintenance
For applications requiring international compliance, high strength, and installation precision, Metric Hex Head Cap Screws Grade 8.8 with Plain Finish provide dependable performance professionals trust worldwide.