Zenith
Pilot 87.2430.4035/21.C721— lug 20mm

The Zenith Pilot 87.2430.4035/21.C721 uses a 20mm lug width. This measurement is determined by the case lug geometry and is compatible with all straps specifically constructed to this width. To measure the lug width, position a digital caliper between the two internal lugs of the case, parallel to the dial.

For this model we recommend dark alligator (Nile crocodile) with pronounced grain texture, for aesthetic contrast between the softness of the leather and the robustness of the case. Alternatively, aged French calf in dark brown or NATO military canvas in cotton with natural rubber core, for a more functional and avionic interpretation.

Place the watch on a soft pad. Use a dedicated removal tool (spring bar tool) to push the lug spring inward from one side, then extract the lug from the attachment. Repeat for the other end. The operation requires care to avoid damaging the case finish, especially at the corners where titanium and rose gold meet.

Yes. Any quality strap with a 20mm lug width is compatible, provided it respects the same internal dimensions. At milanostraps.it you will find a selection of 20mm straps made with Italian craftsmanship, verified for installation without forcing. For custom configurations, the Casati Milano atelier creates bespoke straps following consultation.

A quality artisanal alligator or calf strap supports 18-24 months of regular use (5-7 days per week). Duration depends on moisture exposure, care during storage, and frequency of wear. Aging is not wear: noble leathers develop patina and character, while stitching deterioration signals the need for replacement. Casati Milano offers an 18-month warranty on all straps.