Rolex
Datejust 31 178383-0009— lug 16mm
Rolex Datejust 31 178383-0009: 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 178383-0009The essential strap measurement.
Browse 16mm straps →178383-0009
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. 178383-0009?
The lug width of the Rolex Datejust 31 ref. 178383-0009 is 16 millimetres. This is the standard width for the 31mm Oyster case, precisely calibrated to maintain correct visual proportions between case and strap. Always verify compatibility by measuring the internal space of your case lugs, shoulder to shoulder, before ordering an aftermarket strap.
Which strap material is best for the Datejust 31 178383-0009?
For the Datejust 31 ref. 178383-0009, we recommend genuine alligator or shell cordovan to enhance the Rolesor case's precious character. Alligator offers a naturally geometric texture that elegantly contrasts with yellow gold; shell cordovan provides superior durability and develops a fascinating patina over time. High-quality calf leather remains the most versatile choice, ideal for those seeking leather that ages with distinction.
How do you change the strap on a Rolex Datejust 31?
Changing the strap on a Rolex Datejust 31 requires a specialised tool called a spring bar tool. Position the tip in the small slot beneath the lug, gently pushing downward to release the internal spring, then remove the spring bar. Repeat on the opposite lug, remove the old strap, and insert the new one by aligning it with the spring bar ends before repositioning into the case. We recommend having a professional perform this operation to avoid scratches on the case.
Is an aftermarket strap compatible with the ref. 178383-0009?
Yes, any strap with a 16mm lug width is compatible with the Rolex Datejust 31 ref. 178383-0009, provided it meets appropriate quality standards. However, material quality, finishing precision and leather resilience vary significantly across the aftermarket. Choose manufacturers that guarantee consistent leather thickness, precise finishes and traceable materials, such as those available in our catalogue from certified artisans.
How long does a leather strap last on a watch like the Datejust 31?
Strap longevity depends on material and usage patterns: a quality alligator or shell cordovan strap, worn daily, typically lasts 4 to 7 years before replacement is needed. Standard calf leather lasts 3 to 5 years. Variables such as direct sunlight exposure, humidity levels and frequency of wear affect these estimates. Proper maintenance—avoiding showers and swimming pools, applying conditioner occasionally—extends strap lifespan.
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