Strap for Nautilo Automatic Stainless Steel / DLC / Black / NATO

The lug width of the Anonimo Nautilo AM-1002.01.001.A11 is 20mm. This measurement refers to the distance between the two lugs (spring bar attachment points) on the case and is essential for selecting a compatible strap. Any strap intended for this model must be precisely 20mm wide to ensure proper fit without play or gap.

The ideal strap choice depends on intended use and personal preference. For a classic nautical aesthetic, we recommend vegetable-tanned alligator in bordeaux tone or high-quality natural calf leather. For robust daily use, a NATO strap in navy blue fabric offers practicality and instrumental authenticity. For maximum water resistance, an FKM rubber strap is the most reliable solution. All our 20mm straps are available as bespoke customisable options through our online catalogue.

Strap replacement requires a dedicated spring bar tool. Position the watch on a stable surface and locate the lug (the metal pin at the case end). Gently insert the bifurcated tip of the spring bar tool into the small lateral hole of the lug to compress the internal spring, then remove the old strap. Repeat on the opposite lug. When installing the new 20mm strap, align the pins beneath the strap holes and slowly release the tool pressure until the spring clicks into place. If uncertain, consult a professional watchmaker.

Yes, you may use aftermarket straps of quality provided they are engineered for precisely 20mm lug width. Aftermarket straps offer considerable variety in materials and finishes—alligator, calf, NATO, rubber, shell cordovan—and allow complete customisation of watch aesthetics. It is essential to verify compatibility with your specific model before purchase. Milano Straps offers a curated collection of certified 20mm straps verified for compatibility and constructive quality.

The lifespan of a natural leather strap depends on usage intensity and construction quality. A vegetable-tanned calf or alligator strap subjected to moderate daily use may last 2 to 5 years before replacement becomes necessary. Continuous exposure to perspiration, moisture, and UV rays accelerates leather ageing. Shell cordovan straps, being thicker and more resilient, may last longer. Regular maintenance—gentle cleaning and periodic conditioning—significantly extends useful life. Rubber or NATO straps, conversely, typically endure 3 to 7 years based on mechanical wear rather than material ageing.