Rolex
Datejust 31 178278-0117— lug 16mm
Rolex Datejust 31 178278-0117: 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 178278-0117The essential strap measurement.
Browse 16mm straps →178278-0117
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 178278-0117?
The lug width of the Rolex Datejust 31 reference 178278-0117 is 16mm. This measurement is taken with a digital calliper positioned between the two metallic lugs at the point where the strap meets the case, measuring the internal distance. This is a dimension specific to the Datejust 31 line and differs from the 20mm of the Datejust 41 or the 19mm of the Datejust 36.
What is the best strap for the Rolex Datejust 31 178278-0117 in yellow gold?
For the Datejust 31 178278-0117 in 18-carat yellow gold, a vegetable-tanned alligator strap in tobacco, cognac or burgundy tones is the choice that best complements the case. The alligator belly develops a patina over time that harmonises with the warm reflections of the metal. Alternatives include polished box-calf leather for formal settings or shell cordovan for those who prefer a mirror-like surface with exceptional durability.
How do you change the strap on a Rolex Datejust 31?
To replace the strap on a Rolex Datejust 31, the spring bars must be removed from the lugs using a dedicated angled-tip spring bar tool. Rolex spring bars are under high tension: it is advisable to work on a soft surface to protect the yellow gold case from scratches. If you are not experienced with high-value timepieces, it is preferable to entrust the operation to a watchmaker or the Casati Milano atelier.
Are there aftermarket straps compatible with the Rolex Datejust 31 178278-0117?
Yes, there are aftermarket straps compatible with the Rolex Datejust 31 178278-0117 with a 16mm lug width. It is essential that the strap features pre-curved ends to fit correctly against the Rolex lug profile, ensuring a seamless contact without visible gaps. Milano Straps offers artisanal leather and rubber straps specifically built for this size, with customisable options for material, colour and clasp type, including a deployant clasp.
How long does a leather strap last on a Rolex Datejust 31?
The lifespan of a leather strap on a Rolex Datejust 31 depends on the material and usage. A quality vegetable-tanned alligator strap, properly cared for and kept away from water and excessive perspiration, can last between 3 and 7 years whilst retaining its structure and patina. Calf leather typically lasts 2–4 years. Shell cordovan, owing to the density of its fibres, is the most long-lasting among traditional leathers. All Casati Milano straps carry 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