S-92552A474 M8 x 20 mm DIN 653 Thumb Screws

Key Features & Benefits at a Glance

• Effortless hand-tightening with a 30mm knurled round head for superior grip in tight spaces without tools
• Enhanced corrosion resistance from the black-oxide steel finish, extending service life in industrial environments
• Reliable load-bearing performance with 70,000 psi tensile strength and Rockwell B84 hardness for durable fastening
• Precise thread engagement ensured by Class 6g metric coarse threads, reducing cross-threading risks during installation
• Full-threaded design for maximum holding power across the entire 20mm length in various material thicknesses
• Streamlined compliance with DIN 653 standards and environmental regulations (RoHS 3, REACH) for global project suitability
• Time-saving assembly using right-hand coarse threads (M8 x 1.25mm) for quick adjustments in maintenance and prototyping

Professional Applications & Engineering Value

This black-oxide steel thumb screw addresses common industrial challenges where frequent disassembly is required. The low-profile knurled head provides exceptional torque application by hand, eliminating the need for tools in electronics enclosures, machinery guards, or jig fixtures. Its M8 coarse threading and Class 6g tolerance ensure rapid installation while maintaining vibration resistance in dynamic environments. The fully threaded 20mm length offers versatile clamping across different panel thicknesses, making it ideal for industrial maintenance, automotive assemblies, and prototyping applications where adjustability and durability are critical.

Specification Summary & Compliance

Manufactured to DIN 653 standards with Class 6g thread fit for precise metric coarse threading (M8 x 1.25mm). The screw maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Dimensions include a 30mm head diameter, 6mm head height, and 20mm fully threaded length with right-hand direction.