Rolex
Datejust 31 178273-0011— lug 16mm

The Rolex Datejust 31 reference 178273-0011 has a lug width of 16mm. This is a non-standard size within the Rolex catalogue and requires straps specifically made or sourced for this width. Before purchasing an aftermarket strap, it is advisable to verify the measurement using a digital calliper placed between the lugs, flush against the sapphire crystal.

For the Datejust 31 178273-0011 in steel and yellow gold, a fine-grain Louisiana alligator strap is the most coherent choice: cognac, honey or dark chocolate tones complement the yellow gold case naturally. Shell cordovan in burgundy or navy offers a contemporary alternative with strong character. For more versatile wear, a vegetable-tanned calf leather strap on a deployant clasp provides comfort and longevity.

Replacing the strap on the Datejust 31 requires a springbar tool to remove the spring bars securing the bracelet or strap to the 16mm lugs. It is recommended to work on a soft cloth to avoid scratching the case. If in doubt, Casati Milano offers a professional strap-fitting service in the atelier, ensuring no risk of damage to the case.

Yes, high-quality aftermarket straps compatible with the Datejust 31 178273-0011 are available, provided they are made for 16mm lugs. Milano Straps offers a dedicated selection of handcrafted straps in this width, available in alligator, calf leather and shell cordovan, with either a pin buckle or deployant clasp. It is important to ensure the strap ends are curved to fit the Rolex case profile correctly.

The lifespan of a leather strap depends on material quality, frequency of use and care. A high-quality alligator or shell cordovan strap, used carefully and kept away from moisture, can last between 3 and 7 years while developing a distinguished patina. Vegetable-tanned straps develop a characteristic patina over time that enhances their aesthetic appeal. Using a deployant clasp reduces stress on the buckle holes, significantly extending the strap's service life.