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Description
HARWIN M20-7890446 Board-To-Board Connector, 2.54 mm, 4 Contacts, Receptacle, M20 Series, Through Hole, 1 RowsThe M20 7890446 is a 4 contact 2. 54mm female SIL Board to board Socket with 100% tin over nickel phosphor bronze contacts, 100% tin over nickel plated termination and black UL94V 0 polyamide (nylon) 6T housing. The M20 series receptacle has 3mm solder PC tails, horizontal connector orientation, PC tail through board connection type and side entry style. It is suitable for use with 0. 64mm square mating pin size. Two point solder fixing for connector
The M20-7890446 is a 4-contact 2.54mm female SIL Board-to-board Socket with 100% tin over nickel phosphor bronze contacts, 100% tin over nickel plated termination and black UL94V-0 polyamide (nylon) 6T housing. The M20 series receptacle has 3mm solder PC tails, horizontal connector orientation, PC tail/through board connection type and side entry style. It is suitable for use with 0.64mm square mating pin size. Two point solder fixing for connector rigidity. Suitable for interconnecting board to board. The socket is a box section design with a latch to locate and hold in an insulated housing.
- 3A Current rating
- 20mR Maximum contact resistance
- 1000MR Minimum insulation resistance
- 500VAC for one minute Voltage proof
Applications
Commercial, Industrial
Product details
| No. of Contacts | 4Contacts |
| Contact Plating | Tin Plated Contacts |
| Gender | Receptacle |
| Product Range | M20 Series |
| Contact Material | Phosphor Bronze |
| Contact Termination Type | Through Hole |
| Pitch Spacing | 2.54mm |
| No. of Rows | 1Rows |
Other details
| Brand | HARWIN |
| Part Number | M20-7890446 |
| Quantity | Each |
| Technical Data Sheet EN | |
| 3D Product Image EN |
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them. Image is for illustrative purposes only. Please refer to product description.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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4.5 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 4
Solid little workhorse
Color: Space Grey
Works well. Key part of my espresso setup. Battery charge lasts. Easy to use. My only gripe is that the power switch can be hard (for me) to turn on and off without lifting it up to find it.
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Reviewed in the United States on March 15, 2026
★★★★★ 5
Worth it!
Color: Black
A necessity for anyone trying to elevate their espresso making game. I use this to measure my beans and to also measure the shot I pull and how long it takes to pull. It’s great quality and totally worth it. The scale is very quick to start when the shot starts to pull. Easy to use and a great scale.
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Reviewed in the United States on April 2, 2026
★★★★★ 5
Works prefectly, accurate, easy to use, and looks great.
Color: Black
I didn't expect much but it works really well and seems to be very accurate. It's much more sensitive (to 0.1g) than the scale I was using to measure my coffee and the autostart timer works really well. Also, unlike my other scale, this one is USB-C rechargable and so far has no indication of needing a recharge after a week or so of daily use. My other scale uses CR2032 batteries and goes through a pair every three weeks, so being able to recharge instead is quite nice.
It's small and I can use it to time the extraction and also use it to measure out heated water for tea, or whatever I need. This is definitely a steal for the price.
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Reviewed in the United States on December 9, 2025
★★★★★ 5
Great value and full-functioned.
Color: Black
This is a simple, elegant little scale with timer. It's perfect for use with a small espresso machine like my Breville Bambino Plus. It shifts easily from counter use weighing beans before grinding, to placing on the drip tray to time and weigh shots. The top is smooth and water resistant. I think it's a great value.
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Reviewed in the United States on February 19, 2026
★★★★★ 5
Beautiful, functional, and perfect for a stylish coffee bar
I absolutely love this scale. As someone who cares about both function and aesthetics, this was exactly what I was looking for. It’s refreshing to find a high-quality kitchen tool that doesn’t force you to sacrifice the look of your space. The white and gold design is stunning and fits perfectly on my coffee bar without looking bulky or industrial.
Functionally, it works flawlessly. I primarily use it to measure my coffee beans, but I’ve also used it for other items, and it’s consistently accurate and easy to use. The size is perfect — compact enough to keep out on the counter without taking up space, yet large enough to be practical and stable.
The display is clear, the buttons are responsive, and the overall build feels solid and well made. I also appreciate how intuitive it is to use — no learning curve at all.
If you’re someone who loves a beautiful, cohesive kitchen setup but still wants reliable, quality tools, I would highly recommend this scale. It’s small, stunning, and performs exactly as it should.
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Reviewed in the United States on January 4, 2026
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