Rolex
Datejust 31 178274-0042— lug 16mm

The Rolex Datejust 31 reference 178274-0042 features a lug width of 16 mm. This measurement is the standard specification for all 31 mm Datejust models and determines compatibility with aftermarket straps. It is advisable to verify with a digital calliper before ordering.

For the Datejust 31 178274-0042 with its mother-of-pearl dial and white gold case, the most suitable straps are in smooth alligator in shades of grey, ivory or deep bordeaux, or in vegetable-tanned calfskin for everyday wear. A deployant clasp in steel or white gold is the most coherent closure choice for this model's aesthetic.

To replace the strap on the Datejust 31, a 1.8 mm springbar tool or dedicated lug-removal instrument is required. The curved lugs of this model require straps with matching curved ends. It is recommended to work on a soft surface to protect the case from scratches.

Yes, there are handcrafted aftermarket straps compatible with the Rolex Datejust 31 178274-0042, made for 16 mm curved lugs. Milano Straps offers a curated selection of leather, alligator and cordovan straps specifically sized for this reference, also available in bespoke versions through the Casati Milano atelier.

The lifespan of a leather strap depends on the material, frequency of use, and maintenance. A high-quality alligator or shell cordovan strap, with regular conditioning using appropriate products, can last between three and six years with daily wear. Vegetable-tanned calfskin develops a characteristic patina over time but is more sensitive to moisture. Casati Milano offers an 18-month guarantee against manufacturing defects.