Hamilton · Boulton
Strap for Hamilton Boulton H13421511
The Boulton Quartz Small Second Stainless Steel / Silver takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
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Lug width

Straps for the Boulton H13421511
Selected for the 18 mm lug width · workshop selection
What length do I need?
Measure your wrist with a tailor's tape or a piece of string, comfortably snug.
| Wrist circumference | Length (long side / short side) |
|---|---|
| 15.0–16.4 cm | 110 / 70 mm |
| 16.5–17.8 cm | 115 / 75 mm |
| 17.9–19.0 cm | 120 / 80 mm |
| 19.1–20.4 cm | 125 / 80 mm |
| 20.5–21.6 cm | 130 / 85 mm |
| 21.7–22.9 cm | 135 / 85 mm |
| over 22.9 cm | on request |
The ready-to-wear strap is 115 × 75 mm. For a smaller or larger wrist I make it in the right length: order your length.
What I'm asked about the Hamilton Boulton H13421511
What strap size does the Hamilton Boulton H13421511 take?
The Hamilton Boulton H13421511 needs 18 mm between the lugs. It's the size I've been fitting on it for years.
Can the strap on the Hamilton Boulton H13421511 be changed?
Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.
Can I put a leather strap on the Hamilton Boulton H13421511?
Yes, in 18 mm leather. On a 27 mm case a calf strap works every day; if you want something more, alligator.
Which strap do you recommend for the Hamilton Boulton H13421511?
A 18 mm calf strap, for every day. You'll find it ready in the 18 mm collection. If you'd rather have something built on your wrist, the Casati atelier.
More Boulton
- Boulton Quartz Small Second Medium Stainless Steel / Macaron - Lemon16 mm
- Boulton Quartz Small Second Medium Stainless Steel / Macaron - Pistacchio16 mm
- Boulton Quartz Small Second Medium Stainless Steel / Macaron - Vanilla16 mm
- Boulton Quartz Small Second Medium Stainless Steel / Macaron - Mint16 mm
- Boulton Quartz Small Second Medium18 mm
- Boulton Quartz Small Second Stainless Steel / Silver18 mm
- Boulton Quartz Small Second Stainless Steel / Silver18 mm
- Boulton Quartz Small Second Stainless Steel / Silver18 mm
All Boulton → Hamilton families →
Every Boulton reference with its measured lug width, on watchbands.ai →
More Hamilton in 18 mm
- Ardmore Quarz 23.4 Stainless Steel / SilverAmerican Classic
- Ardmore Quartz 23.4 Stainless Steel / Silver - GreenAmerican Classic
- Ardmore Quartz 23.4 Stainless Steel / Silver / BraceletAmerican Classic
- Ardmore Quartz 23.4 Stainless Steel / Silver - BeigeAmerican Classic
- Ardmore Quartz 23.4 Stainless Steel / Silver - PinkAmerican Classic
- Lady Hamilton Quartz Stainelss Steel / White / BraceletLady Hamilton
For changing the strap
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only
The atelier's website: casatimilano.com





