SEMS Screw: External Tooth, M3x0.50 Thread Size, 12 mm Lg, Stainless Steel, Passivated
The SEMS Screw: External Tooth (SKU 849AR2, MPN 1-MPE-3-12) is a machine screw with an integrated external tooth lock washer, featuring an M3x0.50 thread size, 12 mm length, stainless steel construction with…
SKU 3G-OTH-528651
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Product Description
The SEMS Screw: External Tooth (SKU 849AR2, MPN 1-MPE-3-12) is a machine screw with an integrated external tooth lock washer, featuring an M3x0.50 thread size, 12 mm length, stainless steel construction with passivated finish, pan head, #1 drive size, and supplied in a 10-pack.
Frequently Asked Questions
What is a SEMS screw with external tooth lock washer 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 industrial assemblies in machinery, electrical panels, and automotive applications where a secure, permanent hold is required.
What are the specifications of the SEMS screw M3x0.50 12 mm?
This SEMS screw has an M3x0.50 thread size, 12 mm length, stainless steel construction with passivated finish, pan head, and #1 drive size. It includes an integrated external tooth lock washer and is supplied in a 10-pack. The manufacturer part number is 1-MPE-3-12.
Where to buy SEMS screws in worldwide?
3G Electric supplies SEMS screws worldwide, handling full logistics and customs clearance for global delivery. As a sourcing specialist across 14 industrial departments, we provide genuine SEMS fasteners like the M3x0.50 12 mm external tooth screw. Contact us for availability and delivery to your location.
How to install a SEMS screw with external tooth lock washer?
Install a SEMS screw by driving it into a pre-tapped hole or nut using a #1 drive tool. The integrated external tooth washer bites into the surface as you tighten, providing vibration resistance. Avoid over-torquing to prevent stripping the stainless steel threads. Use standard torque values for M3 fasteners.
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.









