German Clock Mainspring – 9 × 0.30 × 1000mm × 25mm – NOS

German Clock Mainspring – 9 × 0.30 × 1000mm × 25mm – NOS

This German clock mainspring is a New Old Stock (NOS), unused hole-end replacement spring for compatible mechanical clock movements. Made in Germany from hardened spring steel, it is suitable for antique and vintage clock restoration where the original mainspring is broken, weakened or no longer providing reliable power.

The mainspring measures 9mm wide × 0.30mm thick × 1000mm long × 25mm diameter. Its traditional hole-end design is suitable for many mechanical clock applications, but the replacement spring must always be matched carefully to the original dimensions and attachment style.

Specifications

• Condition: New Old Stock (NOS), unused
• Origin: Made in Germany
• Type: Hole-end clock mainspring
• Width: 9mm
• Thickness: 0.30mm
• Length: 1000mm
• Diameter: 25mm
• Material: Hardened spring steel

Suitable For

• Compatible German and European mechanical clocks
• Antique and vintage clock restoration
• Mechanical clock movement repair and servicing
• Replacement of broken or weakened mainsprings
• Professional clockmakers and experienced repairers

Important

Please carefully measure your original mainspring and confirm the width, thickness, length, diameter and end style before ordering.

Using an incorrectly sized mainspring may affect the power and performance of the movement and could potentially cause damage.

How to Measure Your Clock Mainspring

Not sure how to measure your existing mainspring? Please watch these short video guides before ordering:

• How to Measure a Clock Mainspring – Video 1: https://www.youtube.com/shorts/AfQUvI67Z7U
• How to Measure a Clock Mainspring – Video 2: https://www.youtube.com/shorts/S1Ld8QbYFYU

For the correct replacement, carefully check the width, thickness, length, diameter and end style of your original clock mainspring.

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