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Seiko 1F20-5K8A
The Seiko 1F20-5K8A watch movement operates at a beat rate of 18000 vph.
The Seiko 1F20-5K8A features the following functions:
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|
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 | 039-41 | 721/2113 | Buy part |
| CLICK | 060-10 | 425/991 | Buy part |
| CLUTCH WHEEL | 064-11 | 407/1083 | Buy part |
| CROWN WHEEL | 058-13 | 420/1296 | Buy part |
| CROWN WHEEL RING | 057-12 | 422/704 | Buy part |
| ESCAPE WHEEL, C/C (19 & 21) | 032-23 | 702/520 | Buy part |
| FOURTH WHEEL NO SECOND | 023-26 | 220/842 | Buy part |
| MAINSPRING | 002-17/CIT | 770/187 | Buy part |
| PALLET ARBOR | 72S/42P | 714/BUR 40 | Buy part |
| PALLET FORK & ARBOR | 035-29 | 710/983 | Buy part |
| RATCHET WHEEL | 059-15 | 415/1308 | Buy part |
| REGULATOR | 051-27 | 301/1449 | Buy part |
| ROLLER 180X75X33 | 82S/193R | Buy part | |
| SET LEVER | 067-06 | 443/1470 | Buy part |
| STAFF | 043-20 | 723/1232 | Buy part |
| STEM | 065-68 (use 065-298) | 065-68 | Buy part |
| STEM | 065-298 | 065-298 | Buy part |
| THIRD WHEEL | 017-18 | 211/53 | Buy part |
| WHEEL ESCAPE S/S (17J) | 032-20 | 705/1367 | Buy part |
| WINDING PINION | 063-12 | 410/1321 | Buy part |
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