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12 Size American Pocket Watch Stems

Square sizes for 12 Size and 6 size range from 0.90 to 1.00 mm
Tap 2 thread diameters range from 1.45 to 1.55 mm
Tap 3 range from 1.20 to 1.30 mm

Please Note; Some names of popular case manufactures are listed with some of these stems. However, it does not mean that this named manufacture was the only case company using that stem.

   
Genuine Elgin Stem 4353 (Swiss Style) Streamline

Elgin 12 Size Grades 438, 439, 440, 450, 451, 452, 479

Elgin-3-502
$16.80

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Stem 10 Size, Tap 3, Elgin 10 Size
$15.00
PWS5763
10 Size Elgin grades 542, 543, 546
0.80 mm Square, 1.19 mm Thread
1st Hub Length 1.90 mm, Hub Diameter 1.60 mm
1st Hub Length 2.30 mm, Diameter 1.60 mm
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Stem 10 Size, Tap 3, Howard 10 Size
$14.00
PWS4891
10 Size 0.70 mm Square, 1.19 mm Thread
1st Hub 1.35 mm, 2nd Hub 1.35 mm length 6.50 mm
Overall Length 18.75 mm
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Stem 12 Size, Tap 2 New York Standard & Crown 12 Size
$15.00
PWS4897
12 Size Square 0.97 mm, thread 1.50 mm
Hub Length 0.30 mm, Hub Diameter 1.56
Cone Length 9.8 mm, Cone Diameter 2.12
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Stem 12 Size, Tap 2, Crescent Cases
$18.00
PWS422
12 Size 0.95 mm Square, Thread 1.45 mm
Hub Length 1.90 mm, Hub Diameter 1.80 mm
Cone Diameter 1.45 mm
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Stem 12 Size, Tap 2, Howard
$25.00
PWS4896
12 Size 1.00 mm Square, 1.44 mm Thread
1st Hub 1.81 mm, 2nd Hub 2.10 mm Length 4.0 mm

Howard 12 Size
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Stem 12 Size, Tap 2, Howard 12 Size
$10.00
PWS4890
12 Size 0.93 mm Square, 1.46 mm Thread
Hub/Cone Diameter 1.78
Howard 12 Size
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Stem 12 Size, Tap 2, Illinois 12 Size Thin Open Face Stem
$20.00
PWS1880
12 Size 0.98 mm Square, 1.55 Thread
Hub/Cone Diameter 1.68 mm
2nd Cone Length 4.68 mm

Illinois 12 Size Thin Models 1st, 2nd, & 3rd
Illinois Part Number 1880
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Stem 12 Size, Tap 2, Illinois Cases
$20.00
PWS407
12 Size 0.95 mm Square, 1.49 Thread
Hub Length 3.85 mm, Hub Diameter 2.50 mm
Cone Diameter 1.71 mm
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Stem 12 Size, Tap 2, Illinois Cases
$12.00
PWS428
12 Size Square 0.95 mm, Thread 1.42 mm
Hub Length 1.30 mm, Hub Diameter 1.49 mm
Cone Diameter 1.40 mm
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Stem 12 Size, Tap 2, Illinois Cases
$16.00
PWS535
12 Size 0.95 mm Square, Thread 1.20 mm
Hub Length 3.15 mm, Hub Diameter 1.50 mm
Cone Diameter 1.25 mm
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Stem 12 Size, Tap 2, Keystone Cases
$12.00
PWS414
12 Size 0.91 mm Square, 1.43 mm Thread
Hub Length 3.25 mm, Hub Diameter 2.25 mm
Cone Diameter 1.85 mm
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Stem 12 Size, Tap 2, Keystone Cases
$12.00
PWS421
12 Size 0.97 mm Square, Thread 1.45
Hub Length 2.40 mm, Hub Diameter 2.50 mm
Cone Diameter 2.0 mm
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Stem 12 Size, Tap 2, Philadelphia O Size Cases
$14.00
PWS469
12 Size 1.00 mm Square, 1.50 Thread
Hub Length 1.10 mm, Hub Diameter 2.0 mm
Cone Diameter 1.65 mm
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Stem 12 Size, Tap 2, Philadelphia O Size Cases
$14.00
PWS475
12 Size 0.88 mm Square, Thread 1.45 mm
Hub Length 0.85 mm, Hub Diameter 2.0 mm
Cone Diameter 1.90 mm
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Stem 12 Size, Tap 2, Wadsworth
$14.00
PWS413
12 Size 0.95 mm Square, Thread 1.45 mm
Hub Length 3.15 mm, Hub Diameter 2.40 mm
Cone Diameter 1.75 mm
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Stem 12 Size, Tap 3
$18.00
PWS5481
12 Size 0.95 mm Square, Thread 1.20 mm
Hub Length 0.70 mm, Hub Diameter 1.50 mm
Cone Diameter 1.40 mm
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Stem 12 Size, Tap 3
$15.00
PWS549
12 Size 0.93 mm Square, 1.19 mm Thread
Hub Length 2.40 mm, Hub Diameter 1.40 mm
Cone Diameter 1.26 mm
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Stem 12 Size, Tap 3
$10.00
PWS3815
12 Size 0.95 mm Square, 1.18 mm Thread
Hub Length 1.05 mm, Hub Diameter 1.50 mm
Cone Diameter1.40 mm
Overall Length 8.10 mm
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Stem 12 Size, Tap 3 Illinois Cases
$14.00
PWS533
Square 0.95 mm, Thread 1.15 mm
Hub Length 4.20 mm, Hub Diameter 1.90 mm
Cone Diameter 1.30 mm
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Stem 12 Size, Tap 3, Crescent Cases
$14.00
PWS368
12 Size 0.95 mm Square, Thread 1.22 mm
Hub Length 1.90, Hub Diameter 1.53
Cone Diameter 1.35
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Stem 12 Size, Tap 3, Elgin
$25.00
PWS4846
12 Size 0.90 mm Square, 1.19 mm Thread
1st Hub Diameter 1.82 mm Width 0.35 mm
2nd Hud Diameter 1.82 mm Length 1.85 mm
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Stem 12 Size, Tap 3, Elgin 12 Size
$15.00
PWS5307
Elgin 12 Size Grades 491, 495, 496, 497, 498
0.92 mm Square, 1.20 mm Thread
1st Hub Diameter 1.80 mm Width 0.35 mm
2nd Hud Diameter 1.80 mm Length 1.80 mm
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Stem 12 Size, Tap 3, Illinois Cases
$15.00
PWS542
12 Size 0.95 mm Square, 1.18 mm Thread
Hub Length 2.32 mm, Hub Diameter 1.70 mm
Cone Diameter 1.45 mm
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Stem 12 Size, Tap 3, Illinois Cases
$14.00
Pws547
12 Size 0.95 mm Square, Thread 1.20 mm
Hub Length 1.35 mm, Hub Diameter 1.50 mm
Cone Diameter 1.35 mm
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Stem 12 Size, Tap 3, Illinois Cases
$18.00
PWS534
12 Size 0.95 mm Square, Thread 1.20
Hub Length 4.20 mm, Hub Diameter 1.90 mm
Cone Diameter 1.30 mm
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Stem 12 Size, Tap 3, Keystone Cases
$14.00
PWS546
12 Size 0.95 mm Square, Thread 1.22
Hub Length 1.76 mm, Hub Diameter 1.18 mm
Cone Diameter 1.08 mm
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Stem 12 Size, Tap 3, Keystone Cases
$14.00
PWS537
12 Size 0.95 mm Square, Thread 1.18 mm
Hub Length 2.75 mm, Hub Diameter 1.50 mm
Cone Diameter 1.25 mm
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Stem 12 Size, Tap 3, Keystone Cases
$15.00
PWS539
12 Size 0.95 mm Square, 1.18 mm Thread
Length 2.9 mm, Hub Diameter 2.05 mm
Cone Diameter 1.37 mm
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Stem 12 Size, Tap 3, Wadsworth
$14.00
PWS5471
12 Size 0.93 Square, Thread 1.17
Hub Length 1.00 mm, Hub Diameter 1.50 mm
Cone Diameter 1.50 mm
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Stem 12 Size, Tap 3, Wadsworth O Size Cases
$14.00
PWS505
12 Size 0.75 mm Square, Thread 1.19 mm
Hub Length 8.35 mm, Hub Diameter 1.50 mm
Cone Diameter 1.35 mm
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Stem 12 Size, Square 1.0 mm Thread 1.10
$18.00
PWS476
12 Size 1.00 mm Square, 1.10 Thread
Hub length 1.0, Hub Diameter 1.91
Cone Diameter 1.45 mm
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Stem 12 Size, Square 1.0 mm Thread 1.18
$18.00
PWS477
12 Size 1.00 mm Square, 1.18 Thread
Hub length 2.85 mm, Hub Diameter 2.0 mm
Cone Diameter 1.45 mm
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Stem 12 Size, Square 1.0 mm Thread 1.40
$20.00
PWS478
12 Size 1.00 mm Square, 1.40 Thread
Hub length 3.90 mm, Hub Diameter 2.35 mm
Cone Diameter 1.75 mm
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Stem 12 Size, Square 1.0 mm Thread 1.45
$20.00
PWS479
12 Size 1.00 mm Square, 1.43 Thread
Hub length 5.22 mm, Hub Diameter 2.35
Cone Diameter 1.85 mm
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Stem 12 Size, Tap 2, Crescent Cases
$16.00
PWS427
12 Size 0.95 Square, Thread 1.48 mm
Hub Length 0.85 mm, Hub Diameter 1.91 mm
Cone Diameter 1.75
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Stem 12 Size, Tap 2, Philadelphia Cases
$15.00
PWS418
12 Size 0.91 mm Square, Thread 1.46
Hub Length 3.0 mm Hub Diameter 1.91 mm
Cone Diameter 1.91 mm
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19 Assorted 12 Size Pocket Watch Stems Squares 0.90 to 1.0 mm
$29.95
PWS-12SIZE-19PCS
A 19 piece assortment of pocket stems with 12 size squares and assorted threads.

For the repair person who know how to adjust a stem and make it work.
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Otto Frei, Watch Parts Since 1930
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Mailing Address: PO BOX 796, Oakland Ca. 94604
Freight Shipment Address: 119 3rd St. Oakland Ca. 94607 USA


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