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SEMS M2.5x0.45 x 4mm Pan Head Machine Screw with External Tooth Lock Washer - Machine Screws with External Tooth Lock Washers
SEMSMachine Screws with External Tooth Lock Washers

SEMS M2.5x0.45 x 4mm Pan Head Machine Screw with External Tooth Lock Washer

The SEMS Screw: External Tooth (SKU 1-MPE-2.5-4, MPN 1-MPE-2.5-4) is a machine screw with an integrated external tooth lock washer, featuring an M2.5x0.45 thread size, 4 mm length, stainless steel construction with…

SKU 3G-OTH-528646

Also listed as: 1MPE254 · 1 MPE 2 5 4 · 1-MPE-2-5-4

Brand
SEMS
Item
M2.5x0.45 x 4mm Pan Head Machine Screw with External Tooth Lock Washer
Part Number
1-MPE-2.5-4
Category
Machine Screws with External Tooth Lock Washers
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

SEMS
Manufacturer Part Number
1-MPE-2.5-4
Type
M2.5x0.45 Thread Size, Stainless Steel, Passivated, Pan, 25 PK
Lg
4 mm
Drive Size
#1

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SEMS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SEMS Screw: External Tooth (SKU 1-MPE-2.5-4, MPN 1-MPE-2.5-4) is a machine screw with an integrated external tooth lock washer, featuring an M2.5x0.45 thread size, 4 mm length, stainless steel construction with passivated finish, pan head, #1 drive size, and supplied in a 25-piece 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 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?

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.

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 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.

How to select the right SEMS screw for an application?

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.

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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.

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Stainless steel, passivated pan head machine screw with an integrated external tooth lock washer. Thread size 1/4"-20, length 3/8 in, #3 drive size. The external tooth washer provides vibration resistance in fastening applications such as industrial machinery, electrical enclosures, and automotive assemblies
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Stainless steel, passivated pan head machine screw with an integrated external tooth lock washer. Thread size 1/4"-20, length 3/8 in, #3 drive size. The external tooth washer provides vibration resistance in fastening applications such as industrial machinery, electrical enclosures, and automotive assemblies

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