Rolex · Datejust 31
Strap for Datejust 31 Stainless Steel/ Rose Gold / Domed / Grey / 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 278241-0017
Selected for the 16 mm lug width
The Datejust 31 278241-0017, seen from the bench
Frequently asked questions
What is the lug width of the Rolex Datejust 31 278241-0017?
The lug width of the Rolex Datejust 31 reference 278241-0017 is 16mm. This measurement should be taken with a digital calliper at the inner base of the lugs to ensure a precise strap fitting without any risk of deformation.
What is the best strap for the Rolex Datejust 31 278241-0017?
For an Everose Rolesor case, a vegetable-tanned alligator strap with a rose gold deployante or buckle is the most formally coherent choice. Shell cordovan offers a more distinctive character with a natural patina that develops over time. For sporting or warm-weather use, vulcanised rubber is the most appropriate technical option.
How do you change the strap on a Rolex Datejust 31?
Replacing the strap on the Datejust 31 requires a spring bar tool — either push-pin or screw type — to release the spring bars securing the strap to the lugs. Work on a soft surface to protect the case. If in doubt, entrust the operation to a watchmaker or a specialist workshop.
Are there aftermarket straps compatible with the Rolex Datejust 31 278241-0017?
Yes. Aftermarket straps compatible with the Datejust 31 278241-0017 must have a 16mm lug width and standard 1.8mm spring bars. Milano Straps offers a curated selection of handcrafted 16mm straps made to order and fully compatible with this reference.
How long does a leather strap last on a Rolex Datejust 31?
A quality leather strap — alligator or shell cordovan, vegetable-tanned — worn daily on a Rolex Datejust 31 typically lasts between two and five years, depending on exposure to perspiration, water and direct sunlight. Rotating between two straps considerably extends their service life. Milano Straps provides an 18-month guarantee 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

