Waltham Watch Mainsprings

Mainsprings for American made Waltham watches can also be ordered at the bottom of the page by the serial number stamped on the movement.

The mainsprings listed here are by factory part number for the spring and the measurements for those who have the gauge and skill to measure a spring. To find factory part number, which is listed for each spring listed you would need a serial number book as well as Waltham parts book by watch grade. Old time watchmakers had these books and sometimes they can be purchased at local AWI or NAWCC meeting. I have seen serial number information on American Watches posted on a few websites over the past five years

Waltham Mainspring JA-701
$25.00
JA-701
Size 18, factory # 2203, width in mm 2.9, strength in mm 0.225, length inches 21, end T

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-702
$25.00
JA-702
Size 18, factory # 2203, width in mm 2.9, strength in mm 0.22, length inches 21, end T

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-703
$25.00
JA-703
Size 18, factory # 2203, width in mm 2.9, strength in mm 0.215, length inches 21, end T

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-704
$25.00
JA-704
Size 18, factory # 2222, width in mm 3.3, strength in mm 0.16, length inches 25, end HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-705
$25.00
JA-705
Size 18, factory # 2205, width in mm 3, strength in mm 0.22, length inches 21, end T

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-708
$25.00
JA-708
Size 16, factory # 2208, width in mm 2.3, strength in mm 0.22, length inches 21, end T

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-710
$25.00
JA-710
Size 16, factory # 2227/2267, width in mm 2.8, strength in mm 0.18, length inches 25, end HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-713
$25.00
JA-713
Size 16, factory # 2218/2267, width in mm 2.8, strength in mm 0.19, length inches 25, end HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-715
$25.00
JA-715
Size 16, factory # 2247/2268, width in mm 2.6, strength in mm 0.17, length inches 19-1/2, end D.B. & HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-717
$25.00
JA-717
Fit 14 size and 10 size, factory # 2234, width in mm 1.3, strength in mm 0.175, length inches 19, end HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-718
$25.00
JA-718
Size 14 (COL. R), factory # 2252/2269, width in mm 1.62, strength in mm 0.17, length inches 19, end HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-720
$25.00
JA-720
Size 12, factory # 2224A/2279, width in mm 2.15, strength in mm 0.16, length inches 19-1/4, end HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-721
$25.00
JA-721
Size 12, factory # 2224A/2279, width in mm 2.15, strength in mm 0.15, length inches 19-1/2, end HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-722
$25.00
JA-722
Size 12, factory # 2224A/2279, width in mm 2.15, strength in mm 0.14, length inches 19-1/2, end HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-725
$25.00
JA-725
Size 6, factory # 2215, width in mm 1.9, strength in mm 0.21, length inches 16, end T

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-726
$25.00
JA-726
Size 6, factory # 2217, width in mm 1.9, strength in mm 0.19, length inches 16, end T

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-727
$25.00
JA-727
Size 6, factory # 2219, width in mm 2.1, strength in mm 0.15, length inches 16, end HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-729
$25.00
JA-729
Size 0, factory # 2220, width in mm 1.5, strength in mm 0.15, length inches 16, end HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-731
$25.00
JA-731
Size 0, factory # 2228, width in mm 1.7, strength in mm 0.13, length inches 15, end HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-732
$25.00
JA-732
Size 0, factory # 2230/2278, width in mm 2.05, strength in mm 0.14, length inches 15, end HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-733
$25.00
JA-733
Size 0, factory # 2230/2278, width in mm 2.05, strength in mm 0.13, length inches 15, end HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-735
$25.00
JA-735
Size 6/0, factory # 2226/2276, width in mm 1.5, strength in mm 0.12, length inches 13-1/2, end HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-737
$25.00
JA-737
Size 6/0, factory # 2235, width in mm 1.3, strength in mm 0.13, length inches 13-1/2, end HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-738
$25.00
JA-738
Size 6/0, factory # 2226, width in mm 1.5, strength in mm 0.12, length inches 9.5, end HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-743
$25.00
JA-743
Size 12S (COL. B.), factory # 2237/2269, width in mm 1.7, strength in mm 0.165, length inches 19-1/4, end HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-746
$25.00
JA-746
Size 7-1/4 L, factory # 2238/2274, width in mm 1.3, strength in mm 0.11, length inches 12, end D.B. & HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-748
$25.00
JA-748
Size 6-1/2 L, factory # 2239/2272, width in mm 1.05, strength in mm 0.1, length inches 9.75, end HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-756
$25.00
JA-756
Size 7-1/2 L, factory # 2234/2266, width in mm 1.12, strength in mm 0.1, length inches 13, end HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-758
$25.00
JA-758
Size 6-3/4 L, factory # 2244/2261, width in mm 1.2, strength in mm 0.065, length inches 7.75, end HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-759
$25.00
JA-759
Size 16, factory # 2246, width in mm 1.5, strength in mm 0.165, length inches 17, end D.B.-T

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-760
$25.00
JA-760
Size 6/0, factory # 2248/2265, width in mm 1.5, strength in mm 0.1, length inches 12, end D.B. & HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-762
$25.00
JA-762
Size 6-3/4 & 7L-675, factory # 2249/2263, width in mm 1.15, strength in mm 0.065, length inches 7.5, end TONGUE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-763
$25.00
JA-763
Size 6-3/4 & 8L-678, factory # 2251/2262, width in mm 1.3, strength in mm 0.08, length inches 9.5, end D.B. & HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-764
$25.00
JA-764
Size 8-3/4L-870, factory # 2253, width in mm 1.3, strength in mm 0.085, length inches 9, end D.B. & HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-767
$25.00
JA-767
Size 22, factory # 2245/2275, width in mm 5.4, strength in mm 0.22, length inches 25, end D.B.-T

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-761
$25.00
JA-761
Size 6/0, factory # 2248/2265, width in mm 1.5, strength in mm 0.11, length inches 12, end D.B. & HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring JA-765
$25.00
JA-765
Size 37, factory # 2232/2280, width in mm 4.5, strength in mm 0.23, length inches 28-1/4, end HOLE

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham Mainspring For Serial # 11,263,956
$25.00

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Waltham 14 Size Mainspring 2211
$25.00
N524
Size 14, factory # 2211, width in mm 2.5, strength in mm 0.22, length inches 19, end T

Quantity	1 - 2	3 - 11	12+
Price	$25.00	$22.00	$18.90

Order Waltham Mainsprings By Serial Number

Just click order and in either the order instuction box, or the order comments box enter the serial number found stamped on the watch movement. We will then look up the serial number and send you the right mainspring.

WALTHAM-MS-SS#
$15.00

Quantity 1 - 2 3 - 11 12+
Price $25.00 $22.00 $18.90

Movement Ligne and American Size Gauge

Gauge measures in watch lignes sizes and millimeters on one side, while the other side gives American watch movement sizes.

MOVEMENT-GAUGE
$3.95

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