Rolex · Datejust 31
Strap for Datejust 31 Stainless Steel/ Rose Gold / Domed / Rose / Jubilee
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 278241-0010
Selected for the 16 mm lug width
The Datejust 31 278241-0010, seen from the bench
Frequently asked questions
What is the lug width of the Rolex Datejust 31 278241-0010?
The lug width of the Rolex Datejust 31 278241-0010 is 16mm. This dimension is specific to the 31mm case and is essential for selecting a compatible strap. Correct measurement: insert a digital calliper between the lugs (lateral case protrusions) to verify the exact internal distance.
Which strap material is most recommended for the Datejust 31?
Alligator remains the most elegant and durable choice for the Datejust 31 278241-0010. A cognac or dark brown tone creates chromatic harmony with Everose, whilst black offers formality. Refined alternative: vegetable-tanned calf, which develops natural patina. For robust daily wear: rubber or military-grade NATO canvas.
How do I change the strap on my Datejust 31?
Strap change is performed by removing the spring bars (elastic rods) that connect the lugs to the case. Use a dedicated tool (spring bar removal tool) to compress the bars and extract them. Install the new bars in the aftermarket strap, then position the strap on the lugs ensuring the bars lock correctly into the lateral holes.
Is an aftermarket strap compatible with the Rolex Datejust 31 ref. 278241-0010?
Yes, provided the lug width is 16mm and the strap is designed for 31mm watches. Straps in alligator, calf, shell cordovan and rubber are available. Always verify that the strap does not show anomalous wear at the attachment points and that the buckle (if metal) is proportioned to the delicate case.
What is the lifespan of a leather strap for the Datejust 31?
A quality alligator or calf strap, with daily use, lasts approximately 3-4 years before requiring restoration or replacement. Durability depends on frequency of use, maintenance (cleaning with damp cloth, rapid drying) and storage. Shell cordovan, if properly maintained, can last over 5 years whilst developing a precious patina.
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

