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400 Day Clock Mainsprings - Select Size Required Below

See below for options.

400 Day Mainspring - Select Size Below.

400 day mainsprings are made of the finest grade steel, tempered evenly throughout the entire length. They are designed to provide the right amount of power for your 400 day clock. Each mainspring is coiled to a diameter small enough to slide into the barrel easily. No expensive mainspring winder needed! Our mainsprings are sized by the width of the spring and the inside diameter of the barrel in millimeters.

Name: 400 Day Mainspring 12mm x 0.30mm x 32mm - CM321
Sku: CM321
Description: Height: 12, Barrel Diameter: 32
Price: 1 (£8.88), 2+ (£8.44), 10+ (£7.99)
Name: 400 Day Clock Mainspring 12x0.38x24mm - CM322
Sku: CM322
Description: Height: 12, Barrel Diameter: 24
Price: 1 (£12.95), 2+ (£12.30), 10+ (£11.66)
Name: 400 Day Mainspring 14x0.46x32mm - CM323
Sku: CM323
Description: Height: 14, Barrel Diameter: 32
Price: 1 (£12.95), 2+ (£12.30), 10+ (£11.66)
Name: 400 Day Mainspring 19x0.41x32mm - CM324
Sku: CM324
Description: Height: 19, Barrel Diameter: 32
Price: 1 (£9.84), 2+ (£9.35), 10+ (£8.86)
Name: 400 Day Mainspring 19x0.43x36mm - CM325
Sku: CM325
Description: Height: 19, Barrel Diameter: 36
Price: 1 (£20.95), 2+ (£19.90), 10+ (£18.86)
Name: 400 Day Mainspring 21x0.38x32mm - CM326
Sku: CM326
Description: Height: 21, Barrel Diameter: 32
Price: 1 (£20.95), 2+ (£19.90), 10+ (£18.86)
Name: 400 Day Mainspring 12x0.33x25mm - CM331
Sku: CM331
Description: Height: 12, Barrel Diameter: 25
Price: 1 (£7.74), 2+ (£7.35), 10+ (£6.97)
Name: 400 Day Mainspring 19x0.41x38mm - CM3310
Sku: CM3310
Description: Height: 19, Barrel Diameter: 38
Price: 1 (£14.70), 2+ (£13.97), 10+ (£13.23)
Name: 400 Day Mainspring 20x0.41x38mm - CM3311
Sku: CM3311
Description: Height: 20, Barrel Diameter: 38
Price: 1 (£16.65), 2+ (£15.82), 10+ (£14.99)
Name: 400 Day Mainspring 21x0.38x50mm - CM3312
Sku: CM3312
Description: Height: 21, Barrel Diameter: 50
Price: 1 (£9.95), 2+ (£9.45), 10+ (£8.96)
Name: 400 Day Mainspring 12x0.36x30mm - CM332
Sku: CM332
Description: Height: 12, Barrel Diameter: 30
Price: 1 (£5.83), 2+ (£5.54), 10+ (£5.25)
Name: 400 Day Mainspring 13x0.55x32mm - CM333
Sku: CM333
Description: Height: 13, Barrel Diameter: 32
Price: 1 (£12.95), 2+ (£12.30), 10+ (£11.66)
Name: 400 Day Mainspring 14x0.33x25mm - CM334
Sku: CM334
Description: Height: 14, Barrel Diameter: 25
Price: 1 (£11.52), 2+ (£10.94), 10+ (£10.37)
Name: 400 Day Mainspring 14x0.36x30mm - CM335
Sku: CM335
Description: Height: 14, Barrel Diameter: 30
Price: 1 (£12.95), 2+ (£12.30), 10+ (£11.66)
Name: 400 Day Mainspring 14x0.41x28mm - CM336
Sku: CM336
Description: Height: 14, Barrel Diameter: 28
Price: 1 (£11.95), 2+ (£11.35), 10+ (£10.76)
Name: 400 Day Mainspring 15x0.50x32mm - CM337
Sku: CM337
Description: Height: 15, Barrel Diameter: 32
Price: 1 (£12.68), 2+ (£12.05), 10+ (£11.41)
Name: 400 Day Mainspring 16x0.46x36mm - CM338
Sku: CM338
Description: Height: 16, Barrel Diameter: 36
Price: 1 (£20.95), 2+ (£19.90), 10+ (£18.86)