Rolex
Datejust 31 178243-0027— lug 16mm
Rolex Datejust 31 178243-0027: 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 178243-0027The essential strap measurement.
Browse 16mm straps →178243-0027
Rolex caliber 2235 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 ref. 178243-0027?
The Rolex Datejust 31 ref. 178243-0027 has a lug width of 16mm. This measurement is specific to the 31mm variant and is not shared with the Datejust 36mm (20mm) or the Lady-Datejust 28mm (13mm). To verify aftermarket strap compatibility, measure the internal distance between the lugs with a calliper: the correct value is exactly 16mm.
What is the best strap for the Rolex Datejust 31 178243-0027 in Yellow Rolesor?
For the Yellow Rolesor variant, alligator belly or hornback straps in bordeaux, cognac or tobacco tones complement the 18-carat yellow gold details. Vegetable-tanned calf leather is ideal for those who appreciate an evolving patina, whilst shell cordovan offers exceptional durability and a characteristic compact lustre. A gold-plated deployant clasp maintains metallic consistency with the case. All straps must feature 16mm lug ends.
How do you change the strap on a Rolex Datejust 31?
Changing the strap on the Datejust 31 requires a springbar tool to remove the spring bars from the 16mm lugs. It is essential to rest the case on a soft cushion during the operation to avoid scratching the bezel or caseback. For premium leather straps — where the precision of the lug-to-leather fit is critical to the final aesthetic — it is advisable to entrust the fitting to a specialist watchmaker or atelier such as Casati Milano.
Are there aftermarket straps compatible with the Rolex Datejust 31 178243-0027?
Yes. The Datejust 31 ref. 178243-0027 accepts any aftermarket strap with a 16mm lug width and a curvature radius compatible with the Oyster case. milanostraps.it offers a curated selection of 16mm straps in alligator, calf leather, shell cordovan and rubber, crafted to fit the Datejust 31 lugs precisely. The Oyster case, water-resistant to 100 metres, is also fully compatible with rubber or synthetic waterproof straps.
How long does a leather strap last on a Rolex Datejust 31?
The lifespan of a leather strap depends on the quality of the hide, frequency of wear and maintenance. A high-grade alligator or shell cordovan strap, regularly conditioned with leather cream and kept away from moisture, can last between 3 and 7 years with daily use. Vegetable-tanned calf develops a fine patina over time but is more susceptible to water exposure. For sporting or summer use, a rubber strap is preferable. Casati Milano provides an 18-month warranty against manufacturing defects on all bespoke straps.
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