Strap for Datejust 31 Stainless Steel Domed / Jubilee / Pink

The lug width of the Rolex Datejust 31 reference 178240-0017 is 16mm. This measurement is dictated by the proportions of the 31mm Oyster case and must be matched precisely to ensure the strap fits correctly between the lugs without play.

For the steel Datejust 31, the most suitable straps are in vegetable-tanned calf leather or smooth alligator, both in 16mm width. Calf leather develops a natural patina over time, whilst alligator offers texture and formality. For more casual or outdoor use, a vulcanised rubber strap is the most practical choice.

To replace the strap on the Datejust 31, a springbar tool is required to release the spring bars securing the bracelet to the lugs. Care must be taken not to scratch the polished lug surfaces during the process. Alternatively, Casati Milano offers a professional fitting service at the atelier by appointment.

Yes, there are numerous aftermarket straps compatible with the Rolex Datejust 31 ref. 178240-0017, provided they feature a 16mm lug width and standard spring bars. MilanoStraps.it offers a curated selection of handcrafted straps in this size, available in calf leather, alligator, NATO, and rubber, with steel buckle or deployant clasp.

The lifespan of a leather strap depends on the quality of the hide, frequency of wear, and exposure to perspiration and moisture. A quality handcrafted strap in vegetable-tanned calf or alligator, worn daily with moderate intensity, typically lasts between 2 and 4 years. Casati Milano's production warranty covers manufacturing defects for 18 months from delivery.