Rolex · Datejust 31
Strap for Datejust 31 Rolesor Everose Domed Diamond / Oyster / Silver Diamond
Takes 16 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Datejust 31 178341-0033
Selected for the 16 mm lug width
The Datejust 31 178341-0033, seen from the bench
Frequently asked questions
What is the lug width of the Rolex Datejust 31 178341-0033?
The lug width of the Datejust 31 178341-0033 is 16 mm. This is a non-standard width, characteristic of Rolex women's models, requiring bespoke straps. It is not compatible with universal 18 mm or 20 mm straps.
Which strap material is best suited for the Datejust 31 178341-0033?
For the Everose Rolesor, we recommend alligator or shell cordovan. Alligator (fine grain, regular pattern) amplifies the refinement of the two-tone case without visual competition. Cordovan develops a soft patina that harmonises beautifully with the warm tone of rose gold. Vegetable-tanned calf leather suits those seeking a more rustic, naturally textured aesthetic.
How do I change the strap on a Rolex Datejust 31?
The Datejust 31 is fitted with a Rolex deployante clasp (typically engraved with the reference number). To replace the strap: 1) Remove the watch from your wrist; 2) Slide the deployante release mechanism to detach the original strap; 3) Insert the new strap into the lugs (pins) of the case, ensuring proper alignment; 4) Secure the deployante by engaging it until you feel a distinct click. If uncertain, consult an authorised Rolex service centre.
Are there aftermarket straps compatible with the 178341-0033?
Yes, provided they respect the 16 mm lug width. Bespoke straps from specialised ateliers such as Casati Milano offer full compatibility with original Rolex pins. Avoid budget universal straps: construction quality and finishing must reflect the calibre of the timepiece.
How long does a leather strap last on a Datejust 31?
A quality leather strap (alligator, cordovan, calf), worn daily, maintains structural and aesthetic integrity between 18 and 36 months, depending on frequency of wear, sun exposure and climatic conditions. Vegetable-tanned leather tends to age more gracefully than synthetic tanneries. With Casati Milano, every strap includes an 18-month warranty against manufacturing defects.
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only

