Rolex · Datejust 31
Strap for Datejust 31 Yellow Gold / Domed / Silver - Roman / Oyster
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 278248-0027
Selected for the 16 mm lug width
The Datejust 31 278248-0027, seen from the bench
Frequently asked questions
What is the lug width of the Rolex Datejust 31 278248-0027?
The lug width of the Datejust 31 278248-0027 is 16 millimetres, measured between the two inner attachment pins of the case. This width is specific to 31-millimetre cases and is essential to ensure a strap fits perfectly without play or excessive tension.
What is the best strap for the Rolex Datejust 31 278248-0027?
For a yellow gold case, alligator straps with vegetable tanning offer the best aesthetic and functional balance. Shades such as chocolate brown or hazelnut enhance the yellow gold without visual competition. Italian vegetable-tanned calf leather represents a versatile alternative that develops a natural patina over time.
How do you change the strap on the Datejust 31?
Use a spring bar tool to gently lever the pins securing the strap to the case lugs. Ensure the pin slides completely out of the lug before removing it entirely. To fit the new strap, reinsert the pins into the lugs until a definitive click confirms secure attachment, verifying the absence of movement.
Is an aftermarket strap compatible with the Datejust 31 278248-0027?
Yes, any strap with a lug width of 16 millimetres is compatible with the Datejust 31 278248-0027. It is essential to verify this specification at the time of ordering. Artisanal bespoke straps, constructed to measure with suitable pins, guarantee fit without tolerances and superior longevity compared to mass-market products.
How long does a leather strap last on a Rolex Datejust 31?
Durability depends on the type of tanning and frequency of use. An alligator or vegetable-tanned calf strap, crafted by hand with hand-finished details, maintains structural and aesthetic integrity between 5 and 10 years with daily use. Exposure to humidity, chlorine and aggressive detergents accelerates ageing. Periodic maintenance with specific creams extends service life.
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

