MainSprings

Hamilton 12S Size Mainspring DBH

Hamilton 12S Swiss made self lubricating mainspring MB end   Height 1.70mm Width  0.175mm length 540mm barrel inner width 16mm   Photo of mainspring is for reference only not exact photo of the item.  

Hamilton 18S Size Mainspring T

Hamilton 18S Swiss made self lubricating mainspring T end 15/718013 T SA201   Height 2.85mm Width  0.205mm length 540mm     Photo of mainspring is for reference only not exact photo of the item.  

Hamilton 6/ 0S Size Mainspring T end 1.35 .11 280

Hamilton 6/0S Swiss made self lubricating mainspring T end   Height 1.35mm Width  0.11mm length 280mm barrel inner width 10mm   Photo of mainspring is for reference only not exact photo of the item.  

Hamilton 6/ 0S Size Mainspring T end 1.35 .135 260

Hamilton 6/0S Swiss made self lubricating mainspring T end   Height 1.35mm Width  0.135mm length 260mm barrel inner width 10mm   Photo of mainspring is for reference only not exact photo of the item.  

Hamilton 6/ 0S Size Mainspring T end 1.35 .135 300

Hamilton 6/0S Swiss made white alloy mainspring T end SA213 1721/1921 part # 718200   Height 1.35mm Width  0.135mm length 300 mm     Photo of mainspring is for reference only not exact photo of the item.  

Hamilton 658 690 Mainspring Automatic

Hamilton 648 690 Automatic mainspring. 6   Height 1.30mm Width  0.10mm length 340mm barrel inner width 10mm  Photo of mainspring is for reference only not exact photo of the item.

Hamilton 911 Mainspring 22/0S Size

Hamilton 911 22/0 Size MB end mainspring. 6221 718601    Height 1.40mm Width  0.65mm length 200mm barrel inner width 6mm SA232   Photo of mainspring is for reference only not exact photo of the item.  

Hamilton 982 Mainspring 14/0S Size

Hamilton 982 14/0S Size DB end mainspring.    Height 1.30mm Width  0.105mm length 320mm barrel inner width 9.5mm   Photo of mainspring is for reference only not exact photo of the item.  

Hamilton 987 Mainspring 6/0S Size T end

Hamilton 987 6/0S Size T end mainspring.    Height 1.40mm Width  0.125mm length 280mm barrel inner width 11mm  American size 5 x 9 3/4 x 11 JA217 2321   Photo of mainspring is for reference only not exact photo of the item.  

Hamilton 992B 16 Size Mainspring 3.00 1.55 600

Hamilton 16 Size  992B Swiss made self lubricating mainspring.  This has a special bridle end mainspring. 992B has been manufactured with different size mainsprings. Please compare the sizes.   Height 3.00mm Width  1.55mm length 600mm...

Hamilton 992B 317 16 Size Mainspring

Hamilton 16 Size 317 and 992B Swiss made self lubricating mainspring.  This is a T end mainspring. 992B has been manufactured with different size mainsprings. Please compare the sizes.   Height 2.80mm Width  0.17mm length 540mm barrel...

Hampden 12S Mainspring 1.80 .18 480 T end

Swiss made Mainspring for Hampden  Measurements in millimeters: 1.80 x 0.18x 48.0 barrel size 15mm T-end