Hamilton Intra-Matic Chronograph

    Every reference with a known width takes the same strap size. Your reference is engraved on the case back or between the lugs at 6 o'clock.

    20 mm

    Two sources agree on ref. H38426820 and H38436830

    40 mm case

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

    Collection3 references
    20 mm
    Illustration drawn to scale: 40 mm case, 20 mm lugs

    Lug widths across the line

    The Hamilton Intra-Matic Chronograph takes a 20 mm strap: all 3 references with a listed width in our database use 20 mm. Check the reference on your case back to be sure.

    Filter references by lug width

    3 Hamilton Intra-Matic Chronograph references

    Hamilton Intra-Matic Chronograph 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.

    • H38426820

      Intra-Matic Chronograph

      20 mm

      Two sources

      40 mmBeige dialStainless steel

      Attachment
      classic lugs
      Status
      Two sources agree

    • H38436830

      Intra-Matic Chronograph

      20 mm

      Two sources

      40 mmBlack dialStainless steel

      Attachment
      classic lugs
      Status
      Two sources agree

    • H38446730

      Intra-Matic Chronograph

      20 mm

      Database

      40 mmBlack dialStainless steel

      Attachment
      classic lugs
      Status
      Listed in our database, not yet verified

    FAQ

    What lug width does the Hamilton Intra-Matic Chronograph use?

    The Hamilton Intra-Matic Chronograph takes a 20 mm strap: all 3 references with a listed width in our database use 20 mm. Check the reference on your case back to be sure. The Hamilton Intra-Matic Chronograph ref. H38426820 and H38436830 take 20 mm (two independent sources agree).

    Where do these Hamilton Intra-Matic Chronograph lug widths come from?

    From our database, which lists 3 Hamilton Intra-Matic Chronograph references, 3 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 Hamilton collections

    All Hamilton 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.