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Hamilton · Railroad

Strap for Hamilton Railroad H40515781

The Railroad 42 Small Second Auto Stainless Steel / Silver takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

22mm
22 mm strapsAll Hamilton
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Lug width22 mm
Case diameter42 mm
ReferenceH40515781
FamilyRailroad
MovementHamilton caliber H-22 Hours, Minutes, Small 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

Standard spring bar · length 22 mm · Ø 1.8 mm double flange · industry standard, no brand part number

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Railroad 42 Small Second Auto Stainless Steel / Silver — watch

Your watch with our straps

Railroad H40515781 with Vintage Brown Calfskin Strap — Natural Patina
Railroad H40515781 with Brown Italian Leather Strap
Railroad H40515781 with Black Saffiano Strap Ecru Stitching

Calf, Brown

Vintage Brown Calfskin Strap — Natural Patina

€98

★ 4.9 · 11

See the strapAll 22 mm straps

1 / 89

Real photos of the strap and the case. No generated images.

What I'm asked about the Hamilton Railroad H40515781

What strap size does the Hamilton Railroad H40515781 take?

The Hamilton Railroad H40515781 needs 22 mm between the lugs, usually 18 or 20 mm at the buckle. It's the size I've been fitting on it for years.

Can the strap on the Hamilton Railroad H40515781 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 Railroad H40515781?

Yes, in 22 mm leather. On a 42 mm case a calf strap works every day; if you want something more, alligator.

Which strap do you recommend for the Hamilton Railroad H40515781?

A 22 mm calf strap, for every day. You'll find it ready in the 22 mm collection. If you'd rather have something built on your wrist, the Casati atelier.

For changing the strap

Classic Strap and Bracelet Removal Tooltwo-tip spring bar tool→Milano Straps Premium Swiss Standard Watch Bucklestang buckle, steel or PVD→Leather Conditioner Milano Strapsnourishes and protects the strap→Casati Milano Rectangular Epsom Leather Travel Case — Brownfor the watch and spare straps→

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

Updated on · by Antonio Zichichi