Hamilton · Boulton
Strap for Boulton Quartz Small Second Medium Stainless Steel / Macaron - Pistacchio
Takes 16 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Boulton H13321813
Selected for the 16 mm lug width
The Boulton H13321813, seen from the bench
Frequently asked questions
What is the lug width of the Hamilton Boulton H13321813?
The lug width of the Hamilton Boulton H13321813 is 16 millimetres. This is a non-standard measurement, smaller than the typical 20mm found on sports watches, reflecting the compact and geometric proportions of the rectangular case. Always verify the measurement by placing a ruler between the two internal attachment points on the case.
What strap is recommended for the H13321813?
For the Boulton, materials that respect the geometric elegance of the case are recommended. Alligator with fine grain (cognac or black) is the formal choice par excellence. Calf leather with vegetable tanning develops natural patina over time. NATO straps in fine canvas offer lightweight daily wear. FKM rubber is ideal for discreet sports contexts.
How do I change the strap on the Hamilton Boulton H13321813?
Use a spring bar tool to remove the elastic pins (spring bars) from the case lugs. Insert the tool into the spring bar slot, apply gentle lateral pressure, and extract the pin. Repeat from the opposite side. Insert the new strap by aligning the holes with the spring bars, then use the tool to reinsert the pins until they click into place.
Can I use an aftermarket strap on this model?
Yes, any strap with a 16mm lug width is compatible with the H13321813. Quality aftermarket artisanal straps are often preferable to original straps, offering greater customisation in the choice of materials (alligator, shell cordovan, vegetable-tanned leather) and finishing.
How long does a leather strap last?
A leather strap with quality vegetable tanning typically lasts 3-5 years with moderate daily use. Durability depends on exposure to UV rays, humidity, and frequency of use. A leather strap develops desirable patina, whilst alligator maintains a more stable texture over time.
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

