S-92552A484 M8 x 40 mm DIN 653 Thumb Screws

Key Features & Benefits at a Glance

• Enhanced Grip and Easy Handling: 30mm knurled round head with low-profile design ensures secure, tool-free tightening and loosening in confined spaces.
• Superior Durability and Corrosion Resistance: Black-oxide steel construction provides excellent protection against rust and wear in demanding industrial environments.
• High Mechanical Strength: With a tensile strength of 70,000 psi and Rockwell B84 hardness, it reliably withstands high-stress applications without failure.
• Precision Thread Fit for Reliable Fastening: Class 6g thread fit and coarse 1.25mm pitch ensure quick, secure engagement and vibration resistance.
• Full Threading for Maximum Holding Power: Fully threaded M8 x 40mm design offers consistent clamping force along the entire length.
• Compliance with International Standards: Meets DIN 653 specifications, ensuring consistent quality and interchangeability in metric assemblies.
• Environmentally Safe for Global Use: RoHS 3 and REACH compliant, making it suitable for regulated industries and export markets.

Professional Applications & Engineering Value

This M8 thumb screw is engineered to solve common industrial challenges, such as frequent adjustments and access in tight spaces. The low-profile knurled head allows for quick manual operation without tools, reducing assembly time and minimizing the risk of stripping. Made from black-oxide steel, it offers enhanced corrosion resistance, which is critical in humid or abrasive settings like machinery maintenance, electronic enclosures, and automotive assemblies. The coarse thread with 1.25mm pitch and Class 6g fit ensures rapid installation and reliable performance under vibration, making it ideal for applications requiring repeated access and high tensile strength. By integrating these features, it delivers long-term reliability and efficiency in industrial thumb screw applications, from prototyping to production lines.

Specification Summary & Compliance

This product features precise metric threading (M8 x 1.25mm) with a Class 6g thread fit and right-hand direction, ensuring dimensional accuracy per ISO standards. It is manufactured to meet DIN 653 specifications for consistent performance. Additionally, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental suitability for global industrial use.