Strap for Datejust 31 Stainless Steel Fluted / Oyster / Purple - Roman

The Rolex Datejust 31 178274-0087 has a lug width of 16 mm. This is an uncommon, non-standard size in the aftermarket strap sector, sitting between the more widespread 14 mm and 18 mm dimensions. Precise measurement between the lugs using a digital calliper is essential before ordering any replacement strap.

For the Datejust 31 178274-0087 in stainless steel and white gold, the most appropriate materials are Louisiana alligator in black or dark grey, shell cordovan in burgundy or tobacco, and vegetable-tanned box calf in champagne or ivory. The choice is guided by the dial colour and intended use. A steel or white gold deployant clasp provides a technically coherent finish regardless of material.

To replace the strap, use a spring bar tool to remove the spring bars connecting the current bracelet or strap to the case lugs. For the 16 mm lug width of this reference, ensure the replacement spring bars are the correct length (16 mm) and diameter (1.5 mm). Always work on a soft surface to avoid scratching the case, and handle the spring bars with care to avoid damaging the lug surfaces.

Yes. Milanostraps.it offers a curated selection of 16 mm aftermarket straps compatible with the Datejust 31 178274-0087, including alligator, calf leather, shell cordovan and NATO nylon options. For a fully bespoke solution — including leather selection, colour and buckle — Casati Milano's atelier in Milan offers made-to-measure craftsmanship with an 18-month production warranty.

Longevity depends on leather quality and frequency of use. A high-grade alligator or shell cordovan strap, worn daily on a rotation basis and conditioned every three to four months, will typically maintain structural and aesthetic integrity for three to six years. Vegetable-tanned leathers develop a natural patina over time, enhancing their character. Perspiration and prolonged exposure to moisture are the primary accelerators of wear.