---
description: Genuine ETA 7750-401 winding stem, Swiss made, 0.9mm square/1.2mm thread, fits 7750 series automatic chronograph, requires cutting to case length.
title: ETA 7750-401 Movement Winding Stem 0.9/1.2 MM - Sofly
image: https://www.soflypart.com/wp-content/uploads/2019/05/7750-0.9.jpg
---
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- **ETA 7750-401 Movement Winding Stem 0.9/1.2 MM**
[](https://www.soflypart.com/wp-content/uploads/2019/05/7750-0.9.jpg)
[](https://www.soflypart.com/wp-content/uploads/2019/05/7750-1.2.jpg)
# ETA 7750-401 Movement Winding Stem 0.9/1.2 MM
$3.00
You Saved
| Brand | Choose an option ETA- 
|
| --- | --- |
| Size | Choose an option 0.9 1.2Clear |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $3.00 |
| 3 - 4 | 5% | $2.85 |
| 5 - 9 | 7% | $2.79 |
| 10 - 14 | 10% | $2.70 |
| 15+ | 15% | $2.55 |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $3.00 |
| 3 - 4 | 5% | $2.85 |
| 5 - 9 | 7% | $2.79 |
| 10 - 14 | 10% | $2.70 |
| 15+ | 15% | $2.55 |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $3.00 |
| 3 - 4 | 5% | $2.85 |
| 5 - 9 | 7% | $2.79 |
| 10 - 14 | 10% | $2.70 |
| 15+ | 15% | $2.55 |
ETA 7750-401 Movement Winding Stem 0.9/1.2 MM quantity
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## Product Description
This is a **genuine ETA 7750-401 winding stem** for the **7750 automatic chronograph movement**, **Swiss made**. It connects the crown to the keyless works for **manual winding and time setting functions**. Featuring **0.9mm / 1.2mm** specification (square and thread sections), it typically requires cutting to case length during installation. This product is **brand new and original**, intended for professional movement servicing and repair.
## Specifications
- **Part Number**：**7750-401**
- **Compatible Movements**：**ETA 7750, 7751, 7753, 7754** and other 7750 series automatic chronograph calibers
- **Origin**：**Swiss Made**
- **Thread Spec**：**0.9mm** (square) / **1.2mm** (thread)
## FAQ
**1. Is this winding stem an original ETA genuine part?**
**Yes**.
**2. Which movements is this stem compatible with?**
It fits **ETA 7750, 7751, 7753, 7754** and other 7750 series automatic chronograph calibers, as used in watches from **IWC, Breitling, and other brands**.
**3. What do the 0.9mm and 1.2mm specifications refer to?**
**0.9mm** is the square section size for engagement with the keyless works; **1.2mm** is the thread section size for crown attachment. This is the **standard specification combination** for the 7750 caliber.
## Why Choose SOFLY Watch Parts?
**Fast Worldwide Shipping** – Orders are dispatched within 3 business days.
**Competitive Pricing** – Great value across watch movements, replacement parts and watchmaking tools.
**Extensive Selection** – More than 3,000 watch movements, parts and accessories available.
**Trusted Worldwide** – Trusted by watchmakers, repair professionals and watch enthusiasts worldwide.
**Personalized Sourcing** – Can’t find the part you need? Contact **info@soflypart.com** or WhatsApp **+86 18620212114.**
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It connects the crown to the keyless works for\u00a0manual winding and time setting functions. Featuring\u00a00.9mm / 1.2mm\u00a0specification (square and thread sections), it typically requires cutting to case length during installation. This product is\u00a0brand new and original, intended for professional movement servicing and repair. Specifications Part Number\uff1a7750-401 Compatible Movements\uff1aETA 7750, 7751, 7753, 7754\u00a0and other 7750 series automatic chronograph calibers Origin\uff1aSwiss Made Thread Spec\uff1a0.9mm\u00a0(square) /\u00a01.2mm\u00a0(thread) FAQ 1. Is this winding stem an original ETA genuine part? Yes. 2. Which movements is this stem compatible with? It fits\u00a0ETA 7750, 7751, 7753, 7754\u00a0and other 7750 series automatic chronograph calibers, as used in watches from\u00a0IWC, Breitling, and other brands. 3. 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Competitive Pricing\u00a0\u2013 Great value across watch movements, replacement parts and watchmaking tools. Extensive Selection\u00a0\u2013 More than 3,000 watch movements, parts and accessories available. Trusted Worldwide\u00a0\u2013 Trusted by watchmakers, repair professionals and watch enthusiasts worldwide. Personalized Sourcing\u00a0\u2013 Can\u2019t find the part you need? Contact\u00a0info@soflypart.com\u00a0or WhatsApp\u00a0+86 18620212114.","image":"https://www.soflypart.com/wp-content/uploads/2019/05/7750-0.9-150x150.jpg","size":"0-9","offers":{"@type":"Offer","description":"Product Description This is a\u00a0genuine ETA 7750-401 winding stem\u00a0for the\u00a07750 automatic chronograph movement,\u00a0Swiss made. It connects the crown to the keyless works for\u00a0manual winding and time setting functions. Featuring\u00a00.9mm / 1.2mm\u00a0specification (square and thread sections), it typically requires cutting to case length during installation. 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