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Mainspring
For Unitas 331
1.20 x 0.130 x 300 x 9.5 mm
GR Reference #: GR2988
Height (H): 1.2mm
Thickness (T): 0.13mm
Total Length (TL): 300mm
Barrel Diameter (BD): 9.5mm
End Type: Manual
To look for similar mainsprings that exactly match a specific dimension, select it from the links above.
Movement Listing
This mainspring is used by the following movements:
| Movement | Description | Ligne |
|---|---|---|
| A. Schild 530.122 | USE AS530.121 EXCEPT PARTS 721,723 | |
| Aurore 4 | ||
| Baumgartner 417 PINLEV | PIN LEVER 60 MIN TIMER | 20 |
| Benrus BN | ||
| Hamilton 950E | AMERICAN P/W OPEN FACE 23 JEWEL | |
| Bidlingmaier 20 | BASCULE | 8.75 x 12 |
| Brac 1395 | BPH DSS AUTO CALD DIGITAL | 11.5 |
| Bulova C812104 | BULOVA CASE REFERENCE | |
| Bulova C829729 | BULOVA CASE REFERENCE | |
| Citizen 4-397738 | CITIZEN CASE | |
| Bulova C833129 | ||
| Bulova C843022 | 14KT | |
| Omega 395.833 | OMEGA CASE USES CALIBER 1377 | |
| Bulova C863092 | BULOVA CASE REFERENCE | |
| Citizen 4-891139 | CITIZEN CASE | |
| Bulova C869144 | CARAVE CASE REFERENCE | |
| Omega 551.056 | OMEGA CASE USES CALIBER 661 | |
| Bulova C876444 | BULOVA CASE | |
| Buren 357 | FOR SWEEP SECOND USE BUREN 358 | 8.75 |
| Certina 17-25 | DSS INCA | 7.75 |
| Citizen 30-5618 | CITIZE CASE REFERENCE | |
| Citizen 34-5083 | CITIZE CASE REFERENCE | |
| Citizen 37-2366 | CITIZE CASE REFERENCE | |
| Citizen 4-002611 | CITIZEN CASE. | |
| Omega 551.056 | OMEGA CASE USES CALIBER 661 | |
| Citizen 4-077385 | CITIZEN CASE | |
| Citizen 4-079086 | CITIZEN CASE | |
| Citizen 4-097840 | CITIZEN CASE | |
| Omega 611.039 | OMEGA CASE USES CALIBER 483 | |
| Citizen 4-156692 | CITIZEN CASE | |
| Seiko 1004-7000 | SEIKO CASE REFERENCE | |
| Citizen 4-202473 | CITIZEN CASE | |
| Citizen 34-5083 | CITIZE CASE REFERENCE | |
| Citizen 4-203917 | CITIZE CASE REFERENCE | |
| Citizen 4-214951 | CITIZEN CASE | |
| Citizen 4-226755 | CITIZEN CASE | |
| Citizen 4-342216 | CITIZEN CASE | |
| MTC MAINSPRING | ||
| Citizen 4-361148 | CITIZEN CASE | |
| Citizen 4-L06686 | CITIZEN CASE | |
| Citizen 4-397738 | CITIZEN CASE | |
| Citizen 4-002611 | CITIZEN CASE. | |
| Citizen 4-408837 | CITIZEN CASE | |
| Bulova C876444 | BULOVA CASE | |
| Citizen 4-451376 | CITIZEN CASE | |
| Orient STAR G-2 | 6.75 x 8 | |
| Citizen 4-731492 | CITIZEN CASE | |
| Heuer WG1122-0 | HEUER CASE REFERENCE | |
| Citizen 4-891139 | CITIZEN CASE | |
| Lunesa 21 | 5.25 x 8.5 | |
| Citizen 4-A00395 | CITIZEN CASE | |
| Omega 2408 | OMEGA CASE USES CALIBER 360 | |
| Citizen 4-C900032 | CITIZEN CASE | |
| Citizen 4-E64618 | CITIZEN CASE | |
| Citizen 4-F41361 | CITIZEN CASE | |
| Orient STAR G-2 | 6.75 x 8 | |
| Citizen 4-G09462 | CITIZEN CASE | |
| Citizen 4-731492 | CITIZEN CASE | |
| Citizen 4-L06686 | CITIZEN CASE | |
| Citizen 4-S06088 | CITIZEN CASE | |
| Buren 357 | FOR SWEEP SECOND USE BUREN 358 | 8.75 |
| Citizen 4-Y67670 | CITIZEN CASE | |
| Fontainemelon 143 | 8.75 | |
| Citizen 41-9052 | CITIZE CASE REFERENCE | |
| Citizen 44-3689 | CITIZE CASE REFERENCE | |
| Citizen 49-5107 | CITIZE CASE REFERENCE | |
| Citizen EA1572 | CITIZE CASE REFERENCE | |
| Citizen QZ8014 | CITIZE CASE REFERENCE | |
| Eberhard 14 | BACKWIND F4036 | 5.75 |
| ES 95B | 21600BPH 17JL W/O SEC OR DSS CALD OR CALD (DAY/DATE) | 12 x 13.5 |
| ES 95B | 21600BPH 17JL W/O SEC OR DSS CALD OR CALD (DAY/DATE) | 12 x 13.5 |
| ETA 980.004 | QUARTZ ANALOG W/O SEC | 5.5 x 6.75 |
| MTC MAINSPRING | ||
| Fontainemelon 143 | 8.75 | |
| Gruen 227SS | 6.75 x 8 | |
| Hamilton 773 | 5.5 | |
| IWC 3251 | 28,800 BPH 31 JEWELS W/O SEC AUTO | 11.5 |
| Hamilton 950E | AMERICAN P/W OPEN FACE 23 JEWEL | |
| Heuer WG1122-0 | HEUER CASE REFERENCE | |
| IWC 3251 | 28,800 BPH 31 JEWELS W/O SEC AUTO | 11.5 |
| Citizen 4-451376 | CITIZEN CASE | |
| Lemania 3065 | CAL SS | 12 |
| Longines 7/45 | ||
| Lunesa 21 | 5.25 x 8.5 | |
| Mido 0637PO | 6.75 | |
| Movado 254-224-001 | ||
| Bulova C863092 | BULOVA CASE REFERENCE | |
| Movado 87-03-862 | MOVADO CASE | |
| MTC MAINSPRING | ||
| Omega 111.0055 | OMEGA CASE USES CALIBER 700 | |
| Omega 191.8605 | OMEGA CASE REFERENCE | |
| Omega 191.922 | OMEGA CASE - USES CALIBER ? | |
| Omega 2408 | OMEGA CASE USES CALIBER 360 | |
| Omega 2712 | OMEGA CASE USES CALIBER 266 | |
| Omega 395.833 | OMEGA CASE USES CALIBER 1377 | |
| Omega 551.056 | OMEGA CASE USES CALIBER 661 | |
| Omega 611.039 | OMEGA CASE USES CALIBER 483 | |
| Omega 7423 | OMEGA CASE USES CALIBER 1365 | |
| Omega 7800 | OMEGA CASE USES CALIBER 480 | |
| Orient STAR G-2 | 6.75 x 8 | |
| Oris 635 | 17JL KIF DSS CALENDAR LEVER MODEL STUD HOLDER | 10.75 |
| Pulsar V242 | LADUS | |
| Ronda 1223-21 | 21600 BPH PIN LEV DSS ALARM | 12 |
| Seiko 1004-7000 | SEIKO CASE REFERENCE | |
| Seiko 1400-5710 | SEIKO CASE REFERENCE | |
| Seiko 1421-0139 | SEIKO CASE REFERENCE |
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Similar Mainspring Listing
This mainspring is similar to the mainspring used by the following movements. A similar mainspring differs slightly in one or more dimensions but may possibly still work as a replacement. When values differ the exact value is shown brackets for reference:
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