Strap for Datejust 31 Stainless Steel Domed / Jubilee / Rhodium Roman

The lug width of the Rolex Datejust 31 178240-0001 is precisely 16mm. This width is specific to this model and defines the aesthetic proportions of the case. To verify it, remove the original strap and measure the internal space between the two spring bars: the value must correspond to 16mm with no lateral play.

The best strap depends on intended use and colour preferences. Alligator leather with vegetable tanning offers the best balance between elegance, durability and patina development over time. Calf leather represents a more accessible alternative with tactile character. For a modern aesthetic, canvas NATO straps on a 31mm model create an ironic and contemporary effect.

Changing the Datejust 31 strap requires the use of a spring bar tool (specific tool for removing pins). Position the watch on a soft surface, insert the spring bar tool into the side slot of the pin until compressing the internal spring, then extract the pin from the lug hole. Repeat for the other side and insert the new strap. Ensure the pins click completely into position.

Yes, we have a dedicated collection of artisanal straps for the 16mm lug width. You can browse the available 16mm straps online or choose a fully customised strap at Casati Milano atelier with direct consultation and leather selection in-house.

A quality leather strap, crafted with vegetable tanning, has an average lifespan of 3-5 years with moderate daily use. Longevity depends on exposure to moisture, perspiration and frequency of sun exposure. Materials such as alligator and shell cordovan guarantee superior durability (5-7 years). Periodic maintenance with specific creams significantly extends the useful life of the strap.