Rolex
Datejust 31 178275f-0002— lug 16mm

The Rolex Datejust 31 ref. 178275f-0002 has a lug width of 16mm. This measurement must be taken at the base of the case, between the two lugs, using a precision calliper. It is a specific dimension that requires straps manufactured to this exact width to ensure a correct, play-free fit.

For an Everose gold case of 31mm, the most suitable materials are vegetable-tanned alligator leather — for its natural grain and coherence with the bezel details — and smooth or bombé calf leather for formal settings. Shell cordovan develops a remarkable patina over time. For sporting or marine use, fine vulcanised rubber provides resistance without compromising overall elegance.

To replace the strap on a Rolex Datejust 31, a fine-tipped spring bar tool is required, preferably with a protective guard to avoid scratching the gold lugs. Remove the two spring bars securing the strap to the lugs, extract the existing strap, and insert the new one ensuring both spring bars click firmly into their seats. Exercise care to avoid marking the rose gold surfaces.

Yes. Many artisan manufacturers produce aftermarket straps with a 16mm fitting compatible with the Rolex Datejust 31. milanostraps.it offers a selection of 16mm straps in various materials and finishes, crafted with precisely calibrated ends for an accurate fit in the original lugs. Closure options include a traditional pin buckle or a rose gold deployant clasp for metallic coherence.

The lifespan of a leather strap depends on the material, care, and frequency of use. A quality vegetable-tanned alligator strap, properly maintained and rotated with others, can last between 3 and 6 years while retaining structural integrity and appearance. Prolonged contact with water, perspiration, or perfume accelerates deterioration. Periodic conditioning with neutral creams suitable for the specific leather type significantly extends strap life.