Technical Archive

Cartier
Tank W5310009

Cartier Tank W5310009: strap made to measure on the watch at the Casati Milano atelier, by appointment.

Tank Anglaise 29.8 Stainless Steel / Silver / Bracelet

Technical Specifications

Cartier W5310009
Reference

W5310009

Movement

Cartier caliber 049 Hours, Minutes, Seconds | Date

The Heritage

The Tank was introduced by Cartier in 1917, inspired by the tanks of World War I. It houses the Cartier 049 caliber with hours, minutes, seconds and date indication. The case features the characteristic rectangular shape with distinctive geometric lines of the model.
Made to Measure

The strap for this watch is made to measure

On the Cartier Tank the bracelet is drawn as part of the case: no catalogue strap will fit. In the atelier we take the measurements on the watch itself and build the strap on the piece — that is the work of Casati Milano.

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FAQ

What is the lug width of the Cartier Tank W5310009?

The lug width of the Cartier Tank W5310009 is 20mm. This measurement corresponds to the internal space between the two lugs at their seat and is standard for this model. Verification is straightforward: measure the slot where the strap connects to the case directly with a calliper.

Which strap is recommended for the Cartier Tank W5310009?

For the W5310009, straps in alligator or vegetable-tanned calf leather represent the most aesthetically balanced choices. Alligator maintains formality, whilst calf develops characteristic patina over time. Shell cordovan offers chromatic rarity, NATO guarantees sporting practicality. The choice depends on usage and context.

How do I change the strap on the Cartier Tank W5310009?

The strap is changed by removing the two spring bars that secure the lug to the case. Use a spring bar tool: insert the tip into the groove of the spring, push laterally and slide the pin out. Repeat on the other side, then insert the new strap and reposition the spring bars.

Can I use an aftermarket strap on the Cartier Tank W5310009?

Yes, any 20mm strap is compatible with the W5310009, regardless of brand. Artisanal aftermarket straps offer greater personalisation than original Cartier straps, allowing choice of leather, finishes and specific colours. Always ensure the spring bars are in optimal condition to prevent damage.

What is the average lifespan of a leather strap for the Cartier Tank W5310009?

A quality leather strap on a daily-worn timepiece lasts 3-5 years before showing significant wear. Durability depends on: frequency of use, moisture exposure, material selected (shell cordovan lasts longer than calf). Regular maintenance—cleaning with a damp cloth and applying leather conditioner—extends useful life by 1-2 years.

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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By appointment only · Milan

The atelier's website: casatimilano.com