Strap for Datejust 31 Yellow Gold Diamond / Oyster / Silver Roman

The Rolex Datejust 31 ref. 178288-0067 has a lug width of 16mm. This measurement is specific to the 31mm case size and differs from the 20mm lugs of the Datejust 41 or the 18mm found on other models within the family. It is advisable to verify the distance between the lugs using a digital calliper before purchasing an aftermarket strap.

For an 18-carat yellow gold case such as that of the Datejust 31 178288-0067, the most suitable materials are vegetable-tanned alligator — which enhances the prestige of the case with its symmetrical grain — and box-calf leather for more versatile everyday wear. Shell cordovan is an intermediate choice, offering a lively patina and compact texture. The correct width is 16mm at the lugs, tapering to a standard width at the buckle end.

To replace the strap on the Datejust 31, a spring bar tool is required to remove the spring bars securing the strap to the case lugs. Care must be taken not to scratch the yellow gold case: it is recommended to protect the lugs with masking tape or a soft cloth before proceeding. Standard 16mm spring bars are widely available and compatible with quality aftermarket straps.

Yes. milanostraps.it offers a selection of 16mm aftermarket straps compatible with the Rolex Datejust 31 178288-0067. The straps are handcrafted in Italy using selected leathers — alligator, calf, shell cordovan — and finished by hand with a keeper and buckle in steel or yellow gold PVD. For a fully bespoke solution, Casati Milano atelier produces straps to millimetric measurements with direct material selection.

The lifespan of a leather strap depends on the material and conditions of use. A quality alligator strap, worn regularly but not daily and kept away from water, can last between three and five years while retaining its structural integrity and appearance. Calf leather tends to crease earlier at the flex points but develops a distinctive patina over time. Shell cordovan is the most durable of the traditional leathers. Casati Milano straps carry an 18-month guarantee against manufacturing defects.