Rolex
Datejust 1601— lug 20mm

The Rolex Datejust 1601 has a lug width of 20mm. This measurement should be taken as the internal distance between the two lugs using a precision calliper, and is compatible with all standard 20mm aftermarket straps available on the market.

For the stainless steel version, a vegetable-tanned calf leather strap is the most coherent choice for formal wear, owing to the natural patina it develops over time. For gold or two-tone versions, a glossy or matte alligator strap complements the precious details. For intensive daily use, a heavy nylon NATO or vulcanised rubber strap offers durability and practicality.

To replace the strap on the Datejust 1601, use a forked or pin-type spring bar tool to remove the 20mm spring bars housed in the lugs. The operation should be carried out with care to avoid scratching the case: we recommend placing a soft cloth between the tool and the steel surface during the swap.

Yes. The Rolex Datejust 1601 features a standard 20mm lug width that accepts any quality aftermarket strap in that size. Milanostraps.it offers a curated selection of leather, nylon, and rubber straps specifically sized for 20mm, including spring bars and verified compatibility with original Rolex lugs.

The lifespan of a leather strap depends on the material, frequency of use, and maintenance. A quality vegetable-tanned calf strap, worn daily and conditioned with leather cream every 2–3 months, typically lasts 2–4 years. Alligator, due to the density of its scales, tends to last longer. Shell cordovan offers above-average durability. Using a deployant clasp reduces mechanical stress on the lug and extends the strap's working life.