Rolex
Datejust 31 278274-0035— lug 16mm

The lug width of the Rolex Datejust 31 278274-0035 is 16mm. This measurement refers to the internal distance between the two lugs of the case and determines compatibility with any aftermarket strap. To verify it, use a digital calliper with the bracelet removed.

For the 278274-0035 in steel and white gold, the most suitable materials are Hornback alligator in warm tones (cognac, tobacco, bordeaux) and shell cordovan for its smooth, luminous surface. For sporting use, shaped vulcanised rubber offers both comfort and formal coherence. All straps must have a 16mm lug width.

To replace the strap on the Datejust 31, a dedicated screwdriver for screw-type spring bars is required (flat-tip watchmaker's spring bar tool). Rolex's original spring bars are screw-type and require a specific tool. It is advisable to work on a soft surface to avoid scratching the case. If in doubt, entrust the work to a qualified watchmaker.

Yes. The aftermarket offers 16mm straps compatible with the Datejust 31 278274-0035 in various materials: leather (alligator, calf, shell cordovan), rubber and technical nylon NATO. Milano Straps offers handcrafted straps made to measure with a 16mm attachment, available online or customisable at the Casati Milano atelier.

The lifespan of a leather strap depends on the material, maintenance and frequency of use. A quality alligator strap, cared for properly and kept away from prolonged exposure to perspiration and water, typically lasts between 2 and 5 years. Shell cordovan, owing to its dense and compact structure, tends to outlast calf leather. Milano Straps provides an 18-month warranty covering manufacturing defects.