Rolex
Datejust 31 278241-0020— lug 16mm

The Rolex Datejust 31 ref. 278241-0020 has a lug width of 16mm. It is essential to measure this dimension accurately between the lugs before purchasing an aftermarket strap, to ensure a proper fit without stressing the lug tips.

For the Datejust 31 in Everose Gold and Oystersteel, an alligator strap with hornback grain in bordeaux or cognac is the most coherent choice. Alternatively, shell cordovan or vegetable-tanned calf leather offer progressive patina and artisanal character. For sport or aquatic use, vulcanised rubber is the preferred option.

To replace the strap on a Datejust 31, the 16mm spring bars must be removed using a flat-tip spring bar tool. It is advisable to protect the case lugs with PTFE tape during the procedure. For deployant clasps, professional assistance from a watchmaker is recommended to preserve lug integrity.

Yes, the aftermarket offers a wide range of 16mm straps compatible with the Rolex Datejust 31, including alligator leather, calf leather, shell cordovan, nylon NATO, and rubber. Milano Straps offers a curated selection of handcrafted 16mm straps available online or bespoke, with standard buckles or deployant clasps.

The lifespan of a leather strap depends on the material, frequency of use, and care. A high-quality vegetable-tanned alligator strap, kept away from excessive water and perspiration and conditioned regularly, can last between 3 and 6 years while developing a distinguished patina. Shell cordovan, owing to its dense fibre structure, generally outlasts standard calf leather.