S-92581A550 M8 x 30 mm DIN 464 Thumb Screws

Key Features & Benefits at a Glance

• Effortless manual tightening and loosening with a 30 mm knurled round head for superior grip without tools
• Enhanced corrosion resistance and durability thanks to the black-oxide steel finish, extending service life in industrial environments
• Reliable and quick assembly from the fully threaded M8 x 1.25 mm coarse thread design, ensuring maximum holding power and fast installation
• Consistent thread engagement and secure fit with Class 6g thread fit, reducing the risk of cross-threading and assembly errors
• High mechanical strength under load with a tensile strength of 70,000 psi and Rockwell B84 hardness for demanding applications
• Stable seating and alignment provided by the integrated collar (16 mm diameter, 12 mm height), minimizing wobble during use
• Broad compatibility and regulatory assurance by meeting DIN 464 standards and being RoHS 3 and REACH compliant for global use

Professional Applications & Engineering Value

This black-oxide steel thumb screw is engineered to address common industrial challenges such as frequent adjustments and tool-free access in machinery, electronics, and assembly lines. The M8 coarse thread with a 1.25 mm pitch and fully threaded design ensures rapid installation and robust fastening, reducing downtime in high-cycle operations. The knurled round head offers exceptional grip even in oily or gloved conditions, while the raised profile and collar enhance stability, preventing loosening under vibration. Ideal for enclosures, panels, and equipment requiring quick assembly, it combines high tensile strength and corrosion resistance to deliver long-term reliability in harsh environments, supporting efficient maintenance and production workflows.

Specification Summary & Compliance

This thumb screw features precise Metric M8 x 1.25 mm coarse threads with a Class 6g thread fit for consistent dimensional accuracy. It is manufactured in compliance with DIN 464 standards and adheres to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety conformity. The right-hand threading and fully threaded construction provide reliable performance across various industrial applications.