Hamilton · Railroad

Strap for Railroad 38 Auto Yellow Gold / Silver

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width18 mm
Case diameter38 mm
ReferenceH40445955
FamilyRailroad
MovementHamilton caliber H-10 Hours, Minutes, Seconds | Date
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 H40445955

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

The Railroad H40445955, seen from the bench

The Railroad represents Hamilton's railway tradition with the automatic H-10 calibre providing hour, minute, second and date indications. The movement offers an extended power reserve compared to standard calibres. The lugs measure 18mm in width for the strap.

Frequently asked questions

What is the lug width of the Hamilton Railroad H40445955?

The lug width of the Hamilton Railroad H40445955 is precisely 18mm. This measurement is taken between the two inner pins of the case lugs. Any strap for this model must be exactly 18mm wide to fit correctly in the lugs without play or forcing.

What is the best strap for the Hamilton Railroad H40445955?

The choice depends on daily wear and personal preference. A vegetable-tanned calf leather strap in black offers elegance and durability, developing a natural patina over time. For versatility, an anthracite NATO or black FKM rubber guarantees practicality. For formal occasions, cognac-coloured shell cordovan conveys vintage authority, although it requires regular maintenance.

How do you change the strap on the Hamilton Railroad H40445955?

The process is straightforward: use a spring bar tool to compress the elastic pins in the case lugs. Position the tool beneath the pin, gently push upward to release tension, then remove the old strap. Insert the new strap, aligning the holes with the pins, ensuring the pin clicks into position. Repeat on the other side. The operation takes less than a minute per side.

Are there aftermarket straps compatible with the H40445955?

Yes, all straps with an 18mm lug width are compatible. Artisan manufacturers offer solutions in vegetable-tanned leather, shell cordovan, alligator, tannin calf and NATO, customisable in colour, buckle and thickness. The key is verifying that the lug width is precisely 18mm and that the strap has been fitted with standard spring bars.

How long does a leather strap last on the Hamilton Railroad H40445955?

A quality calf leather strap with vegetable tanning lasts on average 3-5 years with daily wear and regular maintenance (cleaning with soft cloths, conditioning every 6 months with neutral creams). Shell cordovan, whilst more durable, requires more frequent care. Factors reducing longevity include continuous water exposure, excessive perspiration, forced flexing and lack of preventative maintenance.

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