Please pay special attention to the size! This version is shorter than the SP-603 in the Catalog!
Please verify this size will work in your clock before ordering!
Seth Thomas Suspension Spring – German Made
Restore the precision of your Seth Thomas clock with this high-quality, German-made suspension spring. Essential for accurate timekeeping, this spring supports the pendulum’s smooth, consistent movement.
•1″ Long
•Pin Distance: 18mm (11/16″)
•Thickness: 0.08mm (.0030″)
•Pin Length: 8mm
Perfect for vintage clock repairs and restorations, this suspension spring ensures the reliable performance and timing accuracy expected from a classic Seth Thomas clock.







