Rolex
Datejust 31 178313-0029— lug 16mm
Rolex Datejust 31 178313-0029: 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 178313-0029The essential strap measurement.
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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. 178313-0029?
The Rolex Datejust 31 ref. 178313-0029 features a lug width of 16mm. This measurement is specific to the 31mm case and is critical for aftermarket strap compatibility. Before purchasing a replacement strap, it is advisable to verify the lug width using a digital calliper, measuring the internal distance between the two lugs at the point closest to the case.
What is the best strap for the Rolex Datejust 31 178313-0029?
For the yellow Rolesor configuration of the Datejust 31 178313-0029, the most suitable materials are alligator in cognac or tobacco — which harmonises chromatically with the yellow gold — and vegetable-tanned calf leather in black or brown for more understated daily wear. Shell cordovan is the premium choice for formal occasions, owing to its dense fibre and natural lustre. A deployant clasp in steel or gold-PVD is recommended to protect the gold lugs from repeated mechanical stress.
How do you change the strap on a Rolex Datejust 31?
Strap replacement requires a dedicated springbar tool to remove the spring bars securing the strap to the lugs. Insert the tool tip into the lateral slot of the spring bar, compress the spring and slide the strap free. This operation requires care on gold lugs: it is advisable to protect the case with masking tape or to entrust the task to a watchmaker or atelier to avoid scratching the case.
Are there aftermarket straps compatible with the Rolex Datejust 31 ref. 178313-0029?
Yes, there is a wide range of aftermarket straps compatible with the Datejust 31. The fundamental requirement is a lug width of 16mm. Milano Straps offers a curated selection of handcrafted straps in various materials — alligator, calf leather, shell cordovan, rubber — made specifically for this size, including spring bars and a choice of deployant or traditional buckle closures.
How long does a handcrafted leather strap last on a Rolex Datejust 31?
The lifespan of a handcrafted leather strap depends on the material, frequency of use and maintenance. A high-quality alligator strap, with daily wear and proper care (avoiding prolonged exposure to water and perspiration), typically lasts between three and five years. Vegetable-tanned calf leather offers a similar lifespan while developing a distinctive patina. Shell cordovan is the most durable material due to the density of its fibre. Casati Milano provides an 18-month warranty against manufacturing defects on all 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