SEMS Screw: External Tooth, M2.5x0.45 Thread Size, 4 mm Lg, Stainless Steel

A SEMS screw with an external tooth lock washer is used to fasten components while resisting loosening from vibration. The integrated washer bites into the mating surface, making it ideal for electrical grounding, panel assembly, and light machinery applications where a compact, reliable fastening solution is needed.

This SEMS screw has an M2.5x0.45 thread size, 4 mm length, stainless steel construction with a passivated finish, pan head, #1 drive size, and includes an integrated external tooth lock washer. It is supplied in a 25-piece pack. The manufacturer part number is 1-MPE-2.5-4.

3G Electric supplies SEMS screws worldwide, handling full logistics and customs clearance for global delivery. As a sourcing partner across 14 industrial departments, we provide genuine fasteners like this M2.5x0.45 external tooth screw. Contact us for availability and lead time to your location.

To select the right SEMS screw, match thread size (e.g., M2.5x0.45), length (4 mm), head style (pan), and drive size (#1) to your assembly requirements. Consider material compatibility—stainless steel with passivated finish offers corrosion resistance. The integrated external tooth washer provides vibration resistance without a separate washer.