SEMS Screw: Internal Tooth, M4x0.70 Thread Size, 12 mm Lg, Stainless Steel, Passivated

A SEMS screw with an internal 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.

The SEMS screw 1-MPI-4-12 has an M4x0.70 thread size, 12 mm length, stainless steel construction with passivated finish, pan head, #2 drive size, and includes an integrated internal tooth lock washer. It is supplied in a 5-pack. These specs ensure corrosion resistance and reliable locking in demanding environments.

3G Electric supplies SEMS screws like the 1-MPI-4-12 to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this and other fasteners across 14 industrial departments.

To install a SEMS screw with an internal tooth lock washer, drive it with a #2 driver until the pan head contacts the surface and the washer teeth embed into the mating material. Avoid over-torquing, which can strip the threads or damage the washer. Use a calibrated torque wrench for consistent clamping force.