Metric Sizes Cup Point Black Oxide 45H ISO 4029 DIN 916 Socket Set Screws
Metric Cup Point Socket Set Screws with Black Oxide Finish
Metric cup point socket set screws manufactured to ISO 4029 / DIN 916 standards are precision-engineered fasteners designed for secure, flush installation in high-performance metric applications. Produced from 45H hardened alloy steel, these set screws deliver exceptional strength, wear resistance, and long-term reliability in demanding mechanical environments.
Cup Point Design for Secure Holding Power
The defining feature of these DIN 916 set screws is the cup point tip. Its concave geometry allows the screw to grip the mating surface firmly, resisting both rotational and axial movement without excessive material deformation. This design makes metric cup point socket set screws ideal for securing shafts, collars, pulleys, gears, and rotating components. They perform reliably in both permanent and adjustable assemblies where alignment, torque retention, and vibration resistance are critical.
High-Strength 45H Alloy Steel Construction
Manufactured from hardened 45H alloy steel, these socket set screws are engineered to withstand high mechanical stress and repeated loading. The material offers excellent tensile strength and surface hardness, making these fasteners suitable for industrial machinery, automotive systems, precision equipment, and OEM manufacturing.
Black Oxide Finish Benefits
The black oxide finish provides mild corrosion resistance while preserving precise thread dimensions. This coating enhances surface lubricity, allowing smoother torque application and reducing the risk of galling during installation. The low-reflective, matte black appearance also delivers a clean, professional finish for visible or exposed assemblies.
Precision Manufacturing and Installation
These set screws feature an internal hex (socket) drive, enabling accurate torque control using standard metric hex keys. Manufactured to ISO 4029 / DIN 916 specifications, they ensure consistent dimensions, reliable fit, and dependable performance across applications.
Key Specifications
Thread types: Metric coarse and fine
Drive style: Internal hex socket
Point style: Cup point
Material: 45H hardened alloy steel
Finish: Black oxide
Size range: M2 through M20 and larger upon request
Common Applications
Mechanical and power transmission assemblies
Automotive and drivetrain components
Industrial machinery and automation systems
Precision equipment and OEM products
For applications requiring metric precision, strong holding power, and consistent performance, metric black oxide cup point socket set screws built to DIN 916 standards deliver the durability and reliability professionals trust.