Rolex · Milgauss

Strap for Milgauss White

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter40 mm
Reference116400-0002
FamilyMilgauss
MovementRolex caliber 3131 Hours, Minutes, Seconds | Chronometer
CaseStainless Steel

Recommended spring bar

Spring bars Rolex Milgauss 116400 — 20mm modern

Technical match for lug width and diameter · lug 20 mm · Ø 1.5 mm · closed lugs

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Straps for the Milgauss 116400-0002

Selected for the 20 mm lug width · workshop selection

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The Milgauss 116400-0002, seen from the bench

The Milgauss was introduced in 1956 as an antimagnetic watch for scientists and engineers, reintroduced in 2007 with the reference 116400. It features the automatic caliber 3131 with chronometer certification and resistance to magnetic fields up to 1000 gauss. The case features 20mm lugs and a distinctive greenish sapphire crystal.

Frequently asked questions

What is the lug width of the Rolex Milgauss 116400-0002?

The lug width of the Rolex Milgauss 116400-0002 is 20 millimetres. This measurement represents the distance between the two lateral lugs of the case and is essential for selecting a compatible strap. To verify this measurement correctly, use a calliper or ruler positioned between the two case lugs and measure the internal distance.

What strap material is most suitable for the Milgauss 116400-0002?

The ideal material depends on usage and aesthetic preferences, but we strongly recommend alligator in dark tones (brown or black) for a formal-sportive register, or vegetable-tanned calf leather if you desire a patina that evolves over time. Natural rubber is excellent for a more functional approach, whilst ballistic nylon emphasises its professional-instrument origin. Avoid fragile or decorative materials: the Milgauss demands formal restraint and a neutral palette.

How do you change the strap on a Rolex Milgauss 116400-0002?

Changing the strap on a Rolex Milgauss requires specific tools and technical expertise. The procedure involves using a spring bar tool to remove the pins from the old strap and install them on the new one. We advise against attempting this yourself, as you risk scratching the case or losing small components. Consult a trusted watchmaker or contact Casati Milano for professional replacement.

Is a quality aftermarket strap compatible with the Milgauss 116400-0002?

Yes, any strap with a 20mm lug width is compatible with the Milgauss 116400-0002. However, dimensional compatibility does not guarantee aesthetic coherence or construction quality. A quality aftermarket strap—crafted in alligator, calf leather or natural rubber with precise finishes—enhances the overall value of the watch. Generic or synthetic-material straps compromise elegance and luxury perception. We recommend selecting specialised craftsmen such as Casati Milano.

How long does a leather strap last on a Rolex Milgauss?

Durability depends on leather quality, usage conditions and maintenance. A quality artisanal alligator or calf strap, used regularly and protected from excessive moisture, typically lasts 3–5 years before requiring replacement or repair. Vegetable-tanned leather develops a patina that adds aesthetic character. Casati Milano provides an 18-month warranty against manufacturing defects and recommends periodic maintenance to extend the strap's service life.

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