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Watch Case Part Assortments

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                                              JBC Legacy Watch Parts Database

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                                              MS-JA220

                                              MS-JA220

                                              Mainspring, 3-9.25-14.5 T - MS-JA220

                                              $26.63

                                              Hamilton Mainspring
                                              • Width : 1.18mm
                                              • Strength : .125mm
                                              • Length : 14.50 in.
                                              • End Type : TEE - T End
                                              • Size : 12/0S
                                              • Factory Number : 718400

                                              Specifications

                                              Historical items
                                              BC0241216
                                              Interchange items
                                              BC0241216, JA-220, and JA220
                                              Weight
                                              0.1 oz

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