SEMS M4x0.70 x 20 mm Stainless Steel Pan Head Machine Screw with
The SEMS Screw: External Tooth is a machine screw with an integrated external tooth lock washer, supplied as a 5-pack. This M4x0.70 thread size, 20 mm length, stainless steel, passivated, pan-head fastener features a…
SKU 3G-OTH-528619
Also listed as: 1MPE420 · 1 MPE 4 20
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The SEMS Screw: External Tooth is a machine screw with an integrated external tooth lock washer, supplied as a 5-pack. This M4x0.70 thread size, 20 mm length, stainless steel, passivated, pan-head fastener features a #2 drive size (MPN 1-MPE-4-20). 3G Electric interprets customer demand and delivers genuine industrial equipment across 14 departments—and far more—with specialist depth in combustion, pumps and controls as an authorised distributor.
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 material handling equipment where a secure, permanent joint is required.
What are the specifications of the SEMS screw M4x0.70 20 mm?
This SEMS screw has an M4x0.70 thread size, 20 mm length, stainless steel construction with passivated finish, and a pan head with #2 drive size. It includes an integrated external tooth lock washer and comes as a 5-pack. The manufacturer part number is 1-MPE-4-20.
Where to buy SEMS screws in worldwide?
3G Electric supplies SEMS screws worldwide, handling full logistics and customs clearance for global delivery. As a distributor across 14 industrial departments—including machining, electrical, and power transmission—we source genuine fasteners like this M4x0.70 external tooth screw and deliver to your facility.
How to select the correct SEMS screw size for an application?
To select the correct SEMS screw, match the thread size (e.g., M4x0.70) and length (e.g., 20 mm) to the mating hole and material thickness. Consider the drive type (#2) and head style (pan) for tool access. The integrated lock washer eliminates separate washer selection, simplifying assembly in vibration-prone environments.
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.
