Rolex
Datejust 31 278273-0021— lug 16mm
Rolex Datejust 31 278273-0021: 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 278273-0021The essential strap measurement.
Browse 16mm straps →278273-0021
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 278273-0021?
The Rolex Datejust 31 reference 278273-0021 has a lug width of 16mm. This is a specific measurement for this 31mm case family, distinct from the 18mm of the Datejust 36 and the 20mm of the Datejust 41. For any strap replacement, only straps with a 16mm attachment must be used. The measurement can be verified with a digital calliper on the caseback between the two lugs.
What is the best strap for the Rolex Datejust 31 278273-0021?
For the Datejust 31 278273-0021 in yellow Rolesor, an alligator strap in dark brown or cognac is the most coherent choice given the watch's formal character. Alternatively, vegetable-tanned calf leather develops a distinctive patina over time, while shell cordovan offers superior longevity and a compact grain. For aquatic use, vulcanised rubber is recommended. A deployant clasp in yellow gold completes any combination impeccably.
How do you change the strap on a Rolex Datejust 31?
Replacing the strap on the Datejust 31 requires a spring bar tool to remove the spring bars connecting the strap to the case lugs. The 16mm spring bars compress laterally to disengage. It is advisable to work on a soft cushion to avoid scratching the case and caseback. If you lack experience, the operation can be carried out free of charge by a watchmaker or directly at the Casati Milano atelier upon strap delivery.
Are there aftermarket straps compatible with the Rolex Datejust 31 278273-0021?
Yes, the aftermarket offers straps compatible with the Datejust 31 278273-0021, provided they have a 16mm attachment. Milano Straps offers a dedicated selection of handcrafted straps in leather, rubber and other materials in 16mm, made with stitching and finishing designed for the Oyster case profile. Casati Milano bespoke straps are built to the client's wrist measurements, ensuring a perfect fit.
How long does a leather strap last on a Rolex Datejust 31?
The lifespan of a leather strap depends on the material and frequency of use. A quality alligator strap, rotated with other straps, typically lasts 3 to 5 years before showing structural wear. Shell cordovan, thanks to its dense fibrous structure, can exceed 7 to 10 years. Vegetable-tanned leather develops patina but requires periodic conditioning with neutral cream. Milano Straps straps are covered by an 18-month warranty 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 →By appointment only · Milan
The atelier's website: casatimilano.com