Rolex
Datejust 31 278243-0021— lug 16mm
Rolex Datejust 31 278243-0021: 16mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 16mm lug width to preserve the original sartorial balance."
Technical Specifications
Rolex 278243-0021The essential strap measurement.
Browse 16mm straps →278243-0021
Rolex caliber 2236 Hours, Minutes, Seconds | Date | Chronometer
The Heritage
Compatible Straps
Selected for the 16mm lug width of the Datejust 31
FAQ
What is the lug width of the Rolex Datejust 31 278243-0021?
The lug width of the Rolex Datejust 31 278243-0021 is 16mm. This measurement represents the distance between the lugs (pins) on the watch case and is proportionate to the 31mm case diameter. Any aftermarket strap must respect this tolerance precisely to ensure correct insertion without excessive play or force.
What is the best strap for the Rolex Datejust 31 278243-0021?
The best strap depends on intended use and personal aesthetic preference. For formal elegance, alligator in navy or dark burgundy amplifies chromatic harmony if the dial is Sunburst blue. Vegetable-tanned calf leather suits those seeking natural patina development and visible texture. Shell cordovan is the purist's choice due to its natural durability and incomparable lustre. For daily versatility, spongy rubber with leather passant offers lightness and practicality whilst maintaining the watch's dignity.
How do you change the strap on a Rolex Datejust 31 278243-0021?
Strap replacement requires specific tools: a spring bar tool or a small fine-tipped file. Insert the tool carefully into one of the lateral holes of the spring beneath the pin to release tension, then extract the pin. Once the old strap is removed, align the new strap's pins with the watch case lugs. It is advisable to perform this operation on a clean surface to avoid losing small components.
Which aftermarket strap is compatible with the Datejust 31 278243-0021?
Any strap with a 16mm lug width is compatible with the Datejust 31 278243-0021, provided it is manufactured to precise dimensional tolerances. Compatible straps include alligator, calf leather (including vegetable-tanned), shell cordovan, suede and spongy rubber. Milano Straps offers a complete selection of bespoke 16mm leather straps crafted at the Casati Milano atelier with an 18-month warranty covering manufacturing defects.
How long does a leather strap last on a Rolex Datejust 31 278243-0021?
Durability depends on material, frequency of use and maintenance. An alligator or shell cordovan strap, with proper care, lasts 5-8 years. Vegetable-tanned calf leather has similar lifespan, around 5-7 years, with the advantage of developing a patina that increases aesthetic value over time. Spongy rubber offers greater durability (8-10 years) as it is less subject to fibre ageing. Avoid excessive moisture contact and occasionally apply nourishing balm to maintain leather elasticity.
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 →By appointment only · Milan
The atelier's website: casatimilano.com