Hamilton · Railroad

Strap for Railroad 46 Chrono Stainless Steel / Black

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter46 mm
ReferenceH40616535
FamilyRailroad
MovementETA caliber A07.211 Hours, Minutes, Seconds | Date | Chronograph
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Railroad H40616535

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Railroad H40616535, seen from the bench

The Hamilton Railroad features the ETA A07.211 caliber with hour, minute, second, date and chronograph functions. The case has 22mm lugs. The model maintains the typical railroad design of the Hamilton Railroad collection.

Frequently asked questions

What is the lug width of the Hamilton Railroad H40616535?

The Hamilton Railroad H40616535 is fitted with a lug width of 22 millimetres, the standard construction specification for this chronographic model. The measurement is taken internally between the lug pins, perpendicular to the case shoulders.

Which strap is most suitable for the Hamilton Railroad H40616535?

For the Railroad H40616535, we recommend straps in Tuscan leather with vegetable tanning (tobacco, dark brown, black) for aesthetic coherence with the railroad-spec dial, or authentic alligator for formal contexts. Nylon NATO fabric straps offer a sportier, water-resistant alternative. The 22-millimetre width is the mandatory construction prerequisite.

How do I change the strap on a Hamilton Railroad watch?

Strap replacement requires a spring bar tool or pin extractor. Position the tool beneath the internal lug pin at the case shoulder, apply gentle downward pressure to retract the pin, and withdraw the spent strap. Align the new strap's holes with the lugs, then reintroduce the pin until you hear the click of engagement. We recommend working on a soft, flat surface to prevent case scratching.

Is an aftermarket strap compatible with the Hamilton Railroad H40616535?

Yes, any strap with a 22-millimetre lug width is compatible with the H40616535, provided the holes align correctly with the factory pins. Bespoke artisanal straps represent a superior choice, permitting customisation of leather thickness, eyelet disposition, and buckle or deployante finish.

How long does a leather strap last on a watch with daily wear?

A Tuscan leather strap with vegetable tanning, under intensive daily use, exhibits appreciable patina after 12–18 months whilst maintaining functionality for 3–5 years. Longevity depends on climate (humidity accelerates deterioration), cleaning frequency, and exposure to heat sources. Alligator and shell cordovan exhibit greater resilience, reaching 5–8 years. Technical rubber straps achieve 7–10 years without significant degradation.

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.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only