Rolex
Datejust 31 178313-0054— lug 16mm

The Rolex Datejust 31 reference 178313-0054 features a lug width of 16mm. This measurement is specific to the 31mm case and is not shared with the Datejust 36 or 41 versions, which use 20mm lugs. It is essential to use only 16mm strap attachments to avoid damage to the lugs or spring bars.

For the Datejust 31 178313-0054, with its steel and yellow gold case and mother-of-pearl dial, a polished-grain alligator strap is the most coherent choice given the dressy character of the watch. A vegetable-tanned calf leather strap is ideal for daily wear, developing a personal patina over time. The 16mm lug width is compatible with the artisanal straps available at milanostraps.it.

To replace the strap on the Datejust 31 178313-0054, a 1.8mm spring bar tool is required. Insert the tool into the slot between the lug and the spring bar, compress the spring, and slide the bar out laterally. Care must be taken not to scratch the yellow gold lugs. Alternatively, a watchmaker or the Casati Milano service can perform the swap professionally.

Yes. The Rolex Datejust 31 178313-0054 accepts any aftermarket strap with a 16mm attachment and standard spring bars. milanostraps.it offers a curated selection of handcrafted straps in alligator, calf leather, NATO and rubber, specifically designed for the 16mm lug width, with bespoke customisation available through the Casati Milano atelier.

The lifespan of a leather strap on a Rolex Datejust 31 depends on the material, frequency of use and care. A quality alligator strap, worn in rotation with others, can last between 3 and 6 years. A vegetable-tanned calf strap has an average life of 2 to 4 years. Casati Milano straps carry an 18-month warranty against manufacturing defects. Avoiding prolonged contact with water and perspiration significantly extends strap life.