Rolex · Datejust 31

Strap for Datejust 31 Stainless Steel Fluted / Jubilee / Blue - Floral

Takes 16 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width16 mm
Case diameter31 mm
Reference278274-0036
FamilyDatejust 31
MovementRolex caliber 2236 Hours, Minutes, Seconds | Date | Chronometer
CaseWhite Gold, Stainless Steel

Spring bar

Spring bars for Rolex

The right category for this model · choose the 16 mm size

Straps for the Datejust 31 278274-0036

Selected for the 16 mm lug width

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The Datejust 31 278274-0036, seen from the bench

The Datejust 31 reference 278274-0036 is equipped with the automatic caliber 2236 with hour, minute, second and date functions. The case measures 31mm with 16mm lugs. The movement is COSC certified as a chronometer for accuracy.

Frequently asked questions

What is the exact lug width of the Rolex Datejust 31 278274-0036?

The lug width of the Rolex Datejust 31 278274-0036 is precisely 16 millimetres. This technical specification represents the distance between the two attachment lugs on the case and ensures compatibility with straps designed for this proportion. Incorrect measurements cause lateral play or damaging tension on the attachment points.

Which strap material pairs best with the Datejust 31 278274-0036?

Alligator remains the supreme choice for this model: the natural scale texture dialogues elegantly with the Rolex fluted bezel, whilst vapour permeability maintains comfort. Shell cordovan offers unique patina development over time, whilst vegetable-tanned calf is ideal for those who appreciate character that develops through natural ageing.

How do you correctly change the strap on a Datejust 31 278274-0036?

The Datejust 31 employs standard 16mm spring bars. Using a Spring Bar Removal Tool, apply perpendicular pressure to compress the internal spring, releasing the bar from the lug. Withdraw the old strap gently and insert the new one, ensuring the bar clicks securely into both attachment points. Verify positioning before wearing.

Is a third-party aftermarket strap truly compatible with the Rolex Datejust 31 278274-0036?

Yes, provided it is crafted for 16mm lugs. An artisanal strap designed to this specification offers identical compatibility to an original Rolex accessory, with the added advantage of aesthetic personalisation and the ability to commission bespoke designs tailored to your wrist and colour, texture, and finish preferences.

What is the lifespan of a full-grain leather strap on a daily-wear Datejust 31?

A high-quality alligator or calf leather strap typically lasts between 5 and 8 years of daily wear, conditioned by frequency of use, climate, and maintenance practices. Leather must be dried after water contact, protected from excessive heat and humidity, and gently conditioned every 6 months. Artisanal straps offer 18 months warranty on manufacturing defects and professional reconditioning availability.

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.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only