ETA 7750-401 Movement Winding Stem 0.9/1.2 MM

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 [email protected] or WhatsApp +86 18620212114.