Omega Railmaster

    The strap size depends on the reference. Yours is engraved on the case back or between the lugs at 6 o'clock.

    19 or 20 mm

    Listed by the maker for ref. 220.10.40.20.01.001

    38 to 40 mm cases

    Filter references by lug width
    Find your exact reference

    Official page: Omega

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    Indicative information. Check your watch before buying a strap: whatsmylugwidth.com is not responsible for an incorrect size.

    Collection4 references
    19 mm
    Illustration drawn to scale: 38 mm case, 19 mm lugs

    4 Omega Railmaster references

    Omega Railmaster references in our database. Each card says where its width comes from: listed by the maker (linked to the maker's page in the details), two independent sources agree, or listed in our database and not yet verified by us.

    • CK2914‑1

      Railmaster

      19 mm

      Database

      38 mmBlack dialSteel

      Attachment
      classic lugs
      Movement
      Manual
      Caseback
      Screw-down steel
      Production
      1957-1962
      Status
      Listed in our database, not yet verified

    • CK2914‑2

      Railmaster

      19 mm

      Database

      38 mmBlack dialSteel

      Attachment
      classic lugs
      Movement
      Manual
      Caseback
      Screw-down steel
      Production
      1958-1963
      Status
      Listed in our database, not yet verified

    • CK2914‑3

      Railmaster

      19 mm

      Database

      38 mmBlack dialSteel

      Attachment
      classic lugs
      Movement
      Manual
      Caseback
      Screw-down steel
      Production
      1959-1963
      Status
      Listed in our database, not yet verified

    • 220.10.40.20.01.001

      Railmaster Seamaster Railmaster Co-Axial 40mm Black

      20 mm

      Maker

      40 mmBlack dialSteel

      Attachment
      spring bars
      Movement
      Automatic
      Caseback
      Screw-down steel
      Production
      2017, present
      Status
      Listed by the maker

    FAQ

    What lug width does the Omega Railmaster use?

    Omega Railmaster lug width: 19 or 20 mm depending on the reference. The most common is 19 mm (3 of the 4 references with a listed width in our database). Find your exact reference in the table below. The Omega Railmaster ref. 220.10.40.20.01.001 takes 20 mm (listed by the maker).

    Do all Omega Railmaster references take the same strap?

    No. 2 different lug widths appear across the line, often by case size or generation. Check the reference engraved on the case back or between the lugs.

    Where do these Omega Railmaster lug widths come from?

    From our database, which lists 4 Omega Railmaster references, 4 of them with a listed width. Each reference card says whether the maker lists the width, two independent sources agree on it, or it is not yet verified.

    Other Omega collections

    All Omega collections

    Help

    What is lug width?

    The gap between the two lugs that hold the strap, in millimetres. A new strap must match it exactly: 20 mm lugs take a 20 mm strap.

    Measure it in 30 seconds

    1. Take the strap off, or look at the back of it: many straps print their width.
    2. Measure the inside gap between the lugs with a caliper or a millimetre ruler.
    3. Round to the nearest whole millimetre. Most watches use 18, 20 or 22 mm.

    Strap, quick release or system?

    Most watches use spring bars, so any strap of the right width fits. Many smartwatches use their own band system instead, such as Apple Watch bands or Garmin QuickFit.