ETA 2000-375 Movement Stud Support

Product Description

The ETA 2000-375 Movement Stud Support is a genuine Swiss-made component for the ETA 2000 automatic movement. As an essential part of the balance assembly, this stud support secures the hairspring stud within the regulating system, ensuring proper hairspring positioning and stable timekeeping. This brand new original part is essential for watchmakers restoring the balance assembly when the original stud support becomes worn or damaged.

Features & Function

• Genuine ETA part – authentic Swiss-made component for the ETA 2000 movement 

• Balance assembly component – secures the hairspring stud within the regulating system 

• Critical for timekeeping – ensures proper hairspring positioning and stable rate

• Direct replacement – drop-in replacement for worn or damaged stud supports

• Precision-engineered – manufactured to ETA’s original specifications

Specifications

• Part Number: 2000-375 / 375 

• Article Number: 21-2

• Compatible Movement: ETA 2000 (including 2000-1 variant)

• Movement Diameter: 19.4 mm (8¾”’)

• Movement Height: 3.6 mm

• Jewels: 20

• Frequency: 28,800 vph (4 Hz)

• Power Reserve: ~42 hours

• Origin: Switzerland (ETA factory part)

• Condition: Brand new

Applications

• Service and overhaul of ETA 2000-series movements

• Balance assembly repair – replacing worn or damaged stud supports

• Regulating system restoration – ensuring proper hairspring alignment and stability

• Suitable for professional watchmakers and experienced repair technicians

FAQs

1. Is this a genuine ETA part?
Yes, this is a genuine ETA factory part (reference 2000-375), made in Switzerland. ETA parts lists confirm that #375 is the “Stud Support” for ETA movements . It is not an aftermarket or generic copy.

2. Which movements is this stud support compatible with?
This stud support is specifically designed for the ETA 2000 automatic movement and its variant, the 2000-1. ETA parts lists indicate that #375 is a component for the ETA 2000 family .

3. What is the function of the stud support?
The stud support (also known as a stud-holder) is part of the balance assembly that secures the hairspring stud and thereby the outer end of the hairspring . It ensures the hairspring is correctly positioned in the regulating system for accurate timekeeping.

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