Strap for Datejust 31 Rolesor Yellow Diamond / Oyster / Champagne Floral

The Rolex Datejust 31 reference 178383-0018 has a lug width of 16mm. This measurement is specific to the 31mm case size and differs from the Datejust 36 (20mm) and the Lady-Datejust 28mm (13mm). To verify it accurately, use a digital calliper to measure the internal gap between the two lugs.

For a two-tone steel and yellow gold reference such as the 178383-0018, a vegetable-tanned alligator strap is the most coherent choice: its symmetrical grain and natural patina complement the fluted gold bezel elegantly. Shell cordovan offers a denser, waxier alternative. A deployante or buckle in steel or yellow gold completes the pairing with consistent metallic harmony.

To remove the original bracelet or strap from the Datejust 31, use a 1.8mm spring bar tool inserted into the lug holes to release the spring bars. Care should be taken to avoid scratching the case: protecting the lugs with masking tape beforehand is advisable. Milano Straps aftermarket straps are supplied with spring bars already fitted for convenience.

Yes. The Rolex Datejust 31 178383-0018 accepts any strap with a 16mm lug width fitted with standard spring bars. Milanostraps.it offers a curated selection of handcrafted straps in alligator, calf leather, shell cordovan, NATO nylon, and rubber, crafted with straight or gently curved ends compatible with the 31mm Oyster case profile.

The lifespan of a leather strap depends on material, tanning method and care. A quality vegetable-tanned alligator strap, rotated with other straps and kept away from excessive moisture, will maintain structural and aesthetic integrity for 3 to 5 years with daily use. Shell cordovan, due to its dense fibre structure, tends to last longer whilst developing a desirable patina. Casati Milano offers an 18-month guarantee against manufacturing defects.