Rolex · Datejust 31
Strap for Datejust 31 Rolesor Everose Domed / Jubilee / White Diamonds
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 178241-0048
Selected for the 16 mm lug width
The Datejust 31 178241-0048, seen from the bench
Frequently asked questions
What is the lug width of the Rolex Datejust 31 ref. 178241-0048?
The Rolex Datejust 31 178241-0048 features a 16mm lug width. This measurement is taken between the internal contact points of the case, where the strap anchors. The 16mm dimension is specific to this Datejust 31 configuration and is not compatible with 14mm lugs (Datejust Lady) or 20mm lugs (Datejust 36). Precise compatibility verification can be achieved by measuring an existing strap or consulting official Rolex documentation.
Which type of strap is best suited for the Datejust 31 178241-0048 in Rolesor Everose?
For a Datejust 31 in Rolesor Everose with champagne dial, we recommend alligator in tonal shades (pearl grey, light champagne) or vegetable-tanned anilline calf in warm brown-chocolate or burgundy tones. Alligator creates chromatic harmony with the 18-carat rose gold and fluted bezel; high-quality calf leather ensures initial softness and predictable aesthetic ageing. Rubber alone is inadvisable, as it diminishes the formal authority of the model. A NATO canvas strap with rubber backing offers practical daily wear without compromising understated elegance.
How do you change the strap on a Rolex Datejust 31?
Changing the strap on a Datejust 31 requires minor tools: a specific spring bar tool, manual precision, and a clean work environment. Insert the tool into the appropriate spring bar seat, push toward the centre to compress the spring, and slide the lug free. Repeat on the opposite side. The new strap should be inserted on one side first, then the other, ensuring both lug springs are correctly seated. If the case is recent or the bezel has undergone recent servicing, authorised Rolex centres are recommended to avoid damage to case finishing.
Is there an aftermarket strap compatible with the Datejust 31 178241-0048?
Yes, 16mm aftermarket straps are fully compatible with the Datejust 31 178241-0048, provided they feature internal lugs respecting the 16mm width and case contact depth. Milano Straps offers a comprehensive collection of straps in alligator, shell cordovan, vegetable-tanned calf, and cotton, all certified for this lug width and handcrafted in atelier workshops. A quality aftermarket strap does not compromise the watch's value; rather, it enhances it by permitting aesthetic variability and protecting the original buckle.
What is the typical lifespan of a leather strap on the Datejust 31?
Leather strap longevity depends on frequency of use, tanning method, and leather quality. A high-quality alligator or shell cordovan strap, worn 4-5 days weekly, typically lasts 3-5 years before showing significant aesthetic wear. Vegetable-tanned anilline calf, more delicate, has comparable lifespan but requires regular maintenance (cleaning, conditioning). A NATO canvas strap with rubber backing offers superior durability, lasting 7-8 years with minimal maintenance. Casati Milano provides an 18-month warranty covering manufacturing defects regardless of material; natural leather wear is not covered.
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

