---
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
---
[Skip to content](#content)
- [Home](https://www.soflypart.com)
-
- [Products](https://www.soflypart.com/shop/)
-
- [Watch Parts](https://www.soflypart.com/product-category/watch-parts/)
-
- [Watch Winding Stem](https://www.soflypart.com/product-category/watch-parts/precision-watch-winding-stems-rolex-winding-stem-sofly/)
-
- **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
Add to cart
x
[Checkout](https://www.soflypart.com/checkout/)
- Covers 99% of Repair Needs
- Wholesale Discounts
- Fast Global Shipping
- 24/7 Customer Support
## 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.**
##### Our Popular Items
[](https://www.soflypart.com/product/generic-cartier-tank-wsta0042-4322-sapphire-crystal-18-9mm/)
### [Generic Cartier Tank WSTA0042/4322 Sapphire Crystal 18.9mm](https://www.soflypart.com/product/generic-cartier-tank-wsta0042-4322-sapphire-crystal-18-9mm/)
[](https://www.soflypart.com/product/generic-rolex-caliber-1220-1225-mainspring/)
### [Generic Rolex Caliber 1220/1225 Mainspring](https://www.soflypart.com/product/generic-rolex-caliber-1220-1225-mainspring/)
[](https://www.soflypart.com/product/generic-rolex-4030-mainspring/)
### [Generic Rolex 4030 Mainspring](https://www.soflypart.com/product/generic-rolex-4030-mainspring/)
[](https://www.soflypart.com/product/generic-rolex-2030-2035-mainspring/)
### [Generic Rolex 2030/2035 Mainspring](https://www.soflypart.com/product/generic-rolex-2030-2035-mainspring/)
[](https://www.soflypart.com/product/cartier-caliber-191-mainspring/)
### [Cartier Caliber 191 Mainspring](https://www.soflypart.com/product/cartier-caliber-191-mainspring/)
[](https://www.soflypart.com/product/eta-e03-001-4000-circuit-block-electronic-module/)
### [ETA E03.001-4000 Circuit Block Electronic Module](https://www.soflypart.com/product/eta-e03-001-4000-circuit-block-electronic-module/)
[](https://www.soflypart.com/product/generic-zenith-el-primero-chronomaster-02-0310-400-sapphire-crystal-29-85mm/)
### [Generic Zenith El Primero Chronomaster 02.0310.400 Sapphire Crystal 29.85mm](https://www.soflypart.com/product/generic-zenith-el-primero-chronomaster-02-0310-400-sapphire-crystal-29-85mm/)
[](https://www.soflypart.com/product/generic-breguet-classique-5920-5907-sapphire-crystal-30-5mm/)
### [Generic Breguet Classique 5920/5907 Sapphire Crystal 30.5mm](https://www.soflypart.com/product/generic-breguet-classique-5920-5907-sapphire-crystal-30-5mm/)
[](https://www.soflypart.com/product/hattori-vd55-vd57-circuit-block-electronic-module/)
### [Hattori VD55/VD57 Circuit Block Electronic Module](https://www.soflypart.com/product/hattori-vd55-vd57-circuit-block-electronic-module/)
[](https://www.soflypart.com/product/eta-caliber-2000-1471-stop-pinion/)
### [ETA Caliber 2000-1471 Stop Pinion](https://www.soflypart.com/product/eta-caliber-2000-1471-stop-pinion/)
- [](https://www.soflypart.com/product/watch-band-butterfly-deployant-clasp-stainless-steel/)Quick View [Add to Cart](https://www.soflypart.com/product/watch-band-butterfly-deployant-clasp-stainless-steel/)Watch Parts [Watch Band Butterfly Deployant Clasp Stainless Steel
](https://www.soflypart.com/product/watch-band-butterfly-deployant-clasp-stainless-steel/) $4.00
You Saved
- [](https://www.soflypart.com/product/generic-cartier-tank-francaise-w2609156-mineral-crystal-30-5mm/)Quick View [Add to Cart](https://www.soflypart.com/product/generic-cartier-tank-francaise-w2609156-mineral-crystal-30-5mm/)Watch Parts [Generic Cartier Tank Francaise W2609156 Mineral Crystal 30.5mm
](https://www.soflypart.com/product/generic-cartier-tank-francaise-w2609156-mineral-crystal-30-5mm/) $45.00
You Saved
- [](https://www.soflypart.com/product/generic-tag-heuer-classic-2000-ck1121-gold-crown-screw-down-5-3mm/)Quick View [Add to Cart](https://www.soflypart.com/product/generic-tag-heuer-classic-2000-ck1121-gold-crown-screw-down-5-3mm/)Watch Parts [Generic TAG Heuer Classic 2000 Ck1121 Gold Crown Screw Down 5.3mm
](https://www.soflypart.com/product/generic-tag-heuer-classic-2000-ck1121-gold-crown-screw-down-5-3mm/) $25.00
You Saved
- [](https://www.soflypart.com/product/generic-breitling-calibre-b01-winding-stem/)Quick View [Add to Cart](https://www.soflypart.com/product/generic-breitling-calibre-b01-winding-stem/)Watch Parts [Generic Breitling Calibre B01-401 Winding Stem Fits Tudor MT5641 / MT5602
](https://www.soflypart.com/product/generic-breitling-calibre-b01-winding-stem/) $26.00
You Saved
- [](https://www.soflypart.com/product/eta-2824-2-2834-2-2836-2-movement-hour-wheel-h2/)Quick View [Add to Cart](https://www.soflypart.com/product/eta-2824-2-2834-2-2836-2-movement-hour-wheel-h2/)Watch Movement Parts [ETA 2824-255 Hour Wheel
](https://www.soflypart.com/product/eta-2824-2-2834-2-2836-2-movement-hour-wheel-h2/) $3.00
You Saved
- [](https://www.soflypart.com/product/generic-richard-mille-055-sapphire-crystal/)Quick View [Add to Cart](https://www.soflypart.com/product/generic-richard-mille-055-sapphire-crystal/)Watch Parts [Generic Richard Mille RM055 Ceramics Sapphire Crystal 35.2/34.6mm
](https://www.soflypart.com/product/generic-richard-mille-055-sapphire-crystal/) $165.00
You Saved
- [](https://www.soflypart.com/product/miyota-citizen-8200-movement-click/)Quick View [Add to Cart](https://www.soflypart.com/product/miyota-citizen-8200-movement-click/)Watch Movement Parts [MIYOTA/CITIZEN 8200 Click
](https://www.soflypart.com/product/miyota-citizen-8200-movement-click/) $1.00
You Saved
- [](https://www.soflypart.com/product/generic-mido-m005-217-rose-gold-watch-crown-and-tube-5-85mm/)Quick View [Add to Cart](https://www.soflypart.com/product/generic-mido-m005-217-rose-gold-watch-crown-and-tube-5-85mm/)Watch Parts [Generic Mido M005.217 Rose Gold Watch Crown And Tube 5.85mm
](https://www.soflypart.com/product/generic-mido-m005-217-rose-gold-watch-crown-and-tube-5-85mm/) $7.00
You Saved
- [](https://www.soflypart.com/product/generic-omega-speedmaster-broad-arrow-321-53-42-sapphire-crystal-34-2mm/)Quick View [Add to Cart](https://www.soflypart.com/product/generic-omega-speedmaster-broad-arrow-321-53-42-sapphire-crystal-34-2mm/)Watch Parts [Generic Omega Speedmaster Broad Arrow 321.53.42 Sapphire Crystal 34.2mm
](https://www.soflypart.com/product/generic-omega-speedmaster-broad-arrow-321-53-42-sapphire-crystal-34-2mm/) $110.00
You Saved
- [](https://www.soflypart.com/product/epson-vx3je-movement-date-wheel-3h/)Quick View [Add to Cart](https://www.soflypart.com/product/epson-vx3je-movement-date-wheel-3h/)Watch Movement Parts [Hattori VX3JE Movement Date Wheel 3H
](https://www.soflypart.com/product/epson-vx3je-movement-date-wheel-3h/) $1.00
You Saved
```json
{"@context":"https://schema.org","@graph":[{"@type":["Store","Organization"],"@id":"https://www.soflypart.com/#organization","name":"Sofly","url":"https://www.soflypart.com","logo":{"@type":"ImageObject","@id":"https://www.soflypart.com/#logo","url":"https://www.soflypart.com/wp-content/uploads/2019/12/Sofly-logo.png","contentUrl":"https://www.soflypart.com/wp-content/uploads/2019/12/Sofly-logo.png","caption":"Soflypart","inLanguage":"en-US","width":"180","height":"62"},"openingHours":["Mo,Tu,We,Th,Fr,Sa,Su 09:00-17:00"],"image":{"@id":"https://www.soflypart.com/#logo"}},{"@type":"WebSite","@id":"https://www.soflypart.com/#website","url":"https://www.soflypart.com","name":"Soflypart","publisher":{"@id":"https://www.soflypart.com/#organization"},"inLanguage":"en-US"},{"@type":"ImageObject","@id":"https://www.soflypart.com/wp-content/uploads/2019/05/7750-0.9.jpg","url":"https://www.soflypart.com/wp-content/uploads/2019/05/7750-0.9.jpg","width":"580","height":"580","caption":"ETA 7750-401 Movement Winding Stem","inLanguage":"en-US"},{"@type":"BreadcrumbList","@id":"https://www.soflypart.com/product/eta-7750-movement-winding-stem-0-9-1-2-mm/#breadcrumb","itemListElement":[{"@type":"ListItem","position":"1","item":{"@id":"https://www.soflypart.com","name":"Home"}},{"@type":"ListItem","position":"2","item":{"@id":"https://www.soflypart.com/product/eta-7750-movement-winding-stem-0-9-1-2-mm/","name":"ETA 7750-401 Movement Winding Stem 0.9/1.2 MM"}}]},{"@type":"WebPage","@id":"https://www.soflypart.com/product/eta-7750-movement-winding-stem-0-9-1-2-mm/#webpage","url":"https://www.soflypart.com/product/eta-7750-movement-winding-stem-0-9-1-2-mm/","name":"ETA 7750-401 Movement Winding Stem 0.9/1.2 MM - Sofly","datePublished":"2019-05-14T07:07:17+08:00","dateModified":"2026-09-09T11:37:16+08:00","isPartOf":{"@id":"https://www.soflypart.com/#website"},"primaryImageOfPage":{"@id":"https://www.soflypart.com/wp-content/uploads/2019/05/7750-0.9.jpg"},"inLanguage":"en-US","breadcrumb":{"@id":"https://www.soflypart.com/product/eta-7750-movement-winding-stem-0-9-1-2-mm/#breadcrumb"}},{"@type":"ProductGroup","name":"ETA 7750-401 Movement Winding Stem 0.9/1.2 MM - Sofly","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.","sku":"1101006","category":"Watch Parts","mainEntityOfPage":{"@id":"https://www.soflypart.com/product/eta-7750-movement-winding-stem-0-9-1-2-mm/#webpage"},"image":[{"@type":"ImageObject","url":"https://www.soflypart.com/wp-content/uploads/2019/05/7750-0.9.jpg","height":"580","width":"580"},{"@type":"ImageObject","url":"https://www.soflypart.com/wp-content/uploads/2019/05/7750-1.2.jpg","height":"580","width":"580"}],"url":"https://www.soflypart.com/product/eta-7750-movement-winding-stem-0-9-1-2-mm/","productGroupID":"1101006","variesBy":["https://schema.org/size"],"hasVariant":[{"@type":"Product","sku":"1101006","name":"ETA 7750-401 Movement Winding Stem 0.9/1.2 MM - ETA, 1.2","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. 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. What do the 0.9mm and 1.2mm specifications refer to? 0.9mm\u00a0is the square section size for engagement with the keyless works;\u00a01.2mm\u00a0is the thread section size for crown attachment. This is the\u00a0standard specification combination\u00a0for the 7750 caliber. Why Choose SOFLY Watch Parts? Fast Worldwide Shipping\u00a0\u2013 Orders are dispatched within 3 business days. 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":"1-2","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. 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. What do the 0.9mm and 1.2mm specifications refer to? 0.9mm\u00a0is the square section size for engagement with the keyless works;\u00a01.2mm\u00a0is the thread section size for crown attachment. This is the\u00a0standard specification combination\u00a0for the 7750 caliber. Why Choose SOFLY Watch Parts? Fast Worldwide Shipping\u00a0\u2013 Orders are dispatched within 3 business days. 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.","price":"3","priceCurrency":"USD","availability":"http://schema.org/InStock","itemCondition":"NewCondition","priceValidUntil":"2027-12-31","url":"https://www.soflypart.com/product/eta-7750-movement-winding-stem-0-9-1-2-mm/?attribute_pa_brand=eta&attribute_pa_size=1-2"}},{"@type":"Product","sku":"1101006","name":"ETA 7750-401 Movement Winding Stem 0.9/1.2 MM - ETA, 0.9","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. 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. What do the 0.9mm and 1.2mm specifications refer to? 0.9mm\u00a0is the square section size for engagement with the keyless works;\u00a01.2mm\u00a0is the thread section size for crown attachment. This is the\u00a0standard specification combination\u00a0for the 7750 caliber. Why Choose SOFLY Watch Parts? Fast Worldwide Shipping\u00a0\u2013 Orders are dispatched within 3 business days. 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. 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. What do the 0.9mm and 1.2mm specifications refer to? 0.9mm\u00a0is the square section size for engagement with the keyless works;\u00a01.2mm\u00a0is the thread section size for crown attachment. This is the\u00a0standard specification combination\u00a0for the 7750 caliber. Why Choose SOFLY Watch Parts? Fast Worldwide Shipping\u00a0\u2013 Orders are dispatched within 3 business days. 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.","price":"3","priceCurrency":"USD","availability":"http://schema.org/InStock","itemCondition":"NewCondition","priceValidUntil":"2027-12-31","url":"https://www.soflypart.com/product/eta-7750-movement-winding-stem-0-9-1-2-mm/?attribute_pa_brand=eta&attribute_pa_size=0-9"}}],"@id":"https://www.soflypart.com/product/eta-7750-movement-winding-stem-0-9-1-2-mm/#richSnippet"}]}
```