S-99607A315 M8 x 24 mm Thumb Screws

Key Features & Benefits at a Glance

• Effortless hand-tightening with a 16.5 mm knurled head for superior grip in tight spaces or when tools are unavailable
• Exceptional corrosion resistance thanks to 18-8 Stainless Steel construction, ensuring long-term reliability in harsh environments
• High mechanical strength and durability with a Rockwell B85 hardness and 80,000 psi tensile strength to withstand demanding applications
• Secure and stable seating provided by the flared collar design, preventing over-tightening and distributing load effectively
• Precise and reliable fastening with a Class 6g thread fit and coarse M8 x 1.25 mm thread for quick assembly and vibration resistance
• Full-length threading for maximum engagement and holding power along the entire 24 mm length
• Compliance with environmental and safety standards, including RoHS 3 and REACH, for use in regulated industries

Professional Applications & Engineering Value

This M8 thumb screw is engineered to solve common industrial challenges where tool-free, rapid adjustments are essential. The 18-8 Stainless Steel material offers excellent resistance to rust and corrosion, making it ideal for outdoor equipment, marine hardware, and electronic enclosures exposed to moisture. The knurled head and flared collar work together to provide a non-slip grip and stable base, reducing the risk of stripping or loosening under vibration—common in machinery panels, access covers, and prototyping setups. With its Class 6g thread precision and coarse thread pitch, it ensures quick installation and removal, saving time in maintenance and assembly lines while maintaining a secure hold in hand-tightened applications.

Specification Summary & Compliance

This thumb screw features a Metric M8 x 1.25 mm coarse thread with a Class 6g thread fit for precise dimensional accuracy. It is fully threaded and right-hand oriented, with a length of 24 mm, head diameter of 16.5 mm, and collar dimensions of 12.5 mm diameter by 5 mm height. Manufactured from 18-8 Stainless Steel with a hardness of Rockwell B85 and tensile strength of 80,000 psi, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets strict environmental and safety standards for industrial use.