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Seiko A638-5020
Ligne: 11.5'''
The Seiko A638-5020 watch movement incorporates a sweep seconds function.
The Seiko A638-5020 features the following functions:
- Sweep Seconds
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.20 x 0.110 x 300 x 9.0 mm | GR2949 | Manual | Buy mainspring |
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
Documents
Parts Listing
| Part Description | Reference # | Alternate | Buy |
|---|---|---|---|
| BALANCE COMPLETE | 721/1420 | Buy part | |
| BALANCE COMPLETE | 721/329 | Buy part | |
| MAINSPRING 1.20-.11-300 9 | MS-310K | GR 2949 | Buy part |
| MINUTE RECORDING WHEEL | X/1198 | 3064 | Buy part |
| MINUTE WHEEL | 260/224 | 260/FF 553-2N | Buy part |
| PALLET ARBOR | 72S/84P | 714/AS 500 | Buy part |
| ROLLER 180X75X36 | 82S/40R | 730/31 | Buy part |
| ROLLER, INCABLOC 180X75X36 | 82S/147R | 730/AS 1649 | Buy part |
| STAFF | 100/1455 | Buy part | |
| STAFF, INCA | 100/1497 | Buy part | |
| STEM, FEMALE OA10.2O | 360/231 | 360/231 | Buy part |
| STEM, TAP 10 | 200/1163F | 401/FF 552-2N | Buy part |
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