S-92552A447 M5 x 20 mm DIN 653 Thumb Screws

Key Features & Benefits at a Glance

• Easy manual tightening and loosening with a knurled round head for superior grip, even with gloves or oily hands.
• Enhanced durability and corrosion resistance thanks to the black-oxide steel finish, extending service life in industrial environments.
• Reliable thread engagement with a coarse 0.8mm pitch and Class 6g fit, ensuring secure fastening and reduced cross-threading risk.
• High mechanical strength with a Rockwell B84 hardness and 70,000 psi tensile strength for demanding applications.
• Space-saving low-profile head designed for use in confined areas where clearance is limited.
• Full threading along the 20mm length provides maximum adjustability and holding power throughout the engagement.
• Broad industry compatibility as a right-hand, fully threaded metric screw suitable for a wide range of equipment.

Professional Applications & Engineering Value

This M5 thumb screw is engineered to solve common industrial fastening challenges where tool-less operation and frequent adjustments are required. The black-oxide steel construction offers a robust defense against rust and wear, making it ideal for machinery panels, electronic enclosures, and jig fixtures that undergo regular maintenance. The knurled head texture ensures a non-slip grip, allowing operators to apply sufficient torque manually without specialized tools, which speeds up assembly and disassembly processes. Its metric coarse thread (0.8mm pitch) and Class 6g thread fit provide excellent vibration resistance and quick installation, reducing downtime in production lines. By integrating this low-profile round-head thumb screw, engineers can achieve reliable, repeatable clamping in applications from automotive controls to laboratory equipment, enhancing both operational efficiency and safety.

Specification Summary & Compliance

This thumb screw adheres to precise dimensional and performance standards, including a Class 6g thread tolerance for consistent fit and a fully threaded M5 x 0.8mm design per metric specifications. It meets the DIN 653 standard for thumb screws, ensuring engineering reliability. Additionally, the product is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environmentally conscious and regulated industries.