---
description: Genuine Hattori Y1 series winding stem, Japan made. For Y120/Y121 movements, connects crown for time setting, 0.90mm, Tap 10, requires cutting to case length.
title: Hattori Y1 Series Movement Winding Stem - Sofly
image: https://www.soflypart.com/wp-content/uploads/2019/05/Y1.jpg
---
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- **Hattori Y1 Series Movement Winding Stem**
[](https://www.soflypart.com/wp-content/uploads/2019/05/Y1.jpg)
# Hattori Y1 Series Movement Winding Stem
$1.00
You Saved
| Brand | Choose an option SEIKO- 
Clear |
| --- | --- |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $1.00 |
| 3 - 4 | 5% | $0.95 |
| 5 - 9 | 7% | $0.93 |
| 10 - 14 | 10% | $0.90 |
| 15+ | 15% | $0.85 |
### Discount
| Quantity | Discount (%) | Price |
| --- | --- | --- |
| 1 - 2 | — | $1.00 |
| 3 - 4 | 5% | $0.95 |
| 5 - 9 | 7% | $0.93 |
| 10 - 14 | 10% | $0.90 |
| 15+ | 15% | $0.85 |
Hattori Y1 Series Movement Winding Stem quantity
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## Product Description
This is a **genuine Hattori winding stem** for the **Y1 series quartz movements**, **made in Japan**, compatible with **Y120 and Y121** calibers. It serves as the critical mechanical component connecting the crown to the keyless works for time setting and manual winding functions. This product is **brand new and original**, featuring **0.90mm** stem diameter for **Tap 10** crowns, and typically requires cutting to fit the specific case length during installation.
## Specifications
- **Compatible Movements**：**Y120, Y121** and other Y series quartz calibers
- **Origin**：**Made in Japan**
- **Quality**：**Genuine original**, brand new
- **Stem Diameter**：**0.90mm**
- **Crown Spec**：**Tap 10**
- **Y120 Size**：**6¾ × 8 ligne**, **2.99mm** thick, two-hand (hour/minute)
- **Y121 Size**：**6¾ × 8 ligne**, **3.00mm** thick, three-hand (hour/minute/second)
- **Battery**：Y120 **377** / Y121 **377**
## FAQ
**1. Is this winding stem an original Hattori genuine part?**
**Yes**. It is an **original Hattori/Seiko factory part**, **made in Japan**.
**2. Which movements is this stem compatible with?**
It fits **Hattori Y120, Y121** and other Y series quartz calibers. The Y120 is a **two-hand movement** (hour/minute), while the Y121 is a **three-hand movement** (hour/minute/second)—both use the same stem specification.
**3. Does the stem need to be cut during installation?**
The stem is supplied at a general length and **must be cut to fit the specific case length** before attaching the crown. This should be performed by a **qualified watchmaker**.
## 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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This product is\u00a0brand new and original, featuring\u00a00.90mm\u00a0stem diameter for\u00a0Tap 10\u00a0crowns, and typically requires cutting to fit the specific case length during installation. Specifications Compatible Movements\uff1aY120, Y121\u00a0and other Y series quartz calibers Origin\uff1aMade in Japan Quality\uff1aGenuine original, brand new Stem Diameter\uff1a0.90mm Crown Spec\uff1aTap 10 Y120 Size\uff1a6\u00be \u00d7 8 ligne,\u00a02.99mm\u00a0thick, two-hand (hour/minute) Y121 Size\uff1a6\u00be \u00d7 8 ligne,\u00a03.00mm\u00a0thick, three-hand (hour/minute/second) Battery\uff1aY120\u00a0377\u00a0/ Y121\u00a0377 FAQ 1. Is this winding stem an original Hattori genuine part? Yes. It is an\u00a0original Hattori/Seiko factory part,\u00a0made in Japan. 2. Which movements is this stem compatible with? It fits\u00a0Hattori Y120, Y121\u00a0and other Y series quartz calibers. 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