SEMS Screw: External Tooth, M2.5x0.45 Thread Size, 6 mm Lg, Stainless Steel
The SEMS Screw: External Tooth (SKU 849AP4, MPN 1-MPE-2.5-6) is a machine screw with an integrated external tooth lock washer, featuring an M2.5x0.45 thread size, 6 mm length, stainless steel construction with…
SKU 3G-OTH-528648
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Product Description
The SEMS Screw: External Tooth (SKU 849AP4, MPN 1-MPE-2.5-6) is a machine screw with an integrated external tooth lock washer, featuring an M2.5x0.45 thread size, 6 mm length, stainless steel construction with passivated finish, pan head, and #1 drive size, supplied in a 25-piece pack.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
Frequently Asked Questions
What is a SEMS external tooth screw used for?
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.
What are the specifications of the SEMS screw M2.5x0.45 6 mm?
This SEMS screw has an M2.5x0.45 thread size, 6 mm length, stainless steel construction with passivated finish, pan head, and #1 drive size. It comes in a 25-piece pack. The integrated external tooth lock washer provides vibration resistance without a separate washer.
Where to buy SEMS screws in worldwide?
3G Electric supplies SEMS screws like the M2.5x0.45 external tooth type to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this and other industrial fasteners across our 14 departments.
How to install a SEMS external tooth screw?
Install the SEMS screw using a #1 drive tool, tightening to the torque specified for M2.5 stainless steel fasteners. The integrated lock washer eliminates the need for a separate washer. Ensure the external teeth engage the mating surface fully to prevent loosening under vibration.
SEMS Products
3G Electric supplies SEMS machine screws with external tooth lock washers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









