Rolex
Datejust 31 178274-0081— lug 16mm

The lug width of the Rolex Datejust 31 reference 178274-0081 is 16 mm. This measurement should be taken with a digital calliper positioned between the lugs at the point closest to the case, and is essential when selecting an aftermarket strap to ensure a correct, rattle-free fit.

For the Datejust 31 in white Rolesor, a glossy alligator strap offers the most coherent pairing with the watch's formal character. Vegetable-tanned calf leather is a practical everyday alternative that develops a natural patina over time. For sporting or warm-weather use, NATO or vulcanised rubber straps are functional options that complement the steel case back. All replacements must feature a 16 mm lug width.

The strap on the Datejust 31 is secured via standard 16 mm spring bars fitted into the case lugs. Removal requires a fine-tipped spring bar tool or a watchmaker's screwdriver to compress and release the bars. The operation can be carried out independently with the appropriate tools or entrusted to a professional watchmaker or the Casati Milano atelier.

Yes. Any strap with a 16 mm lug width is technically compatible with the Rolex Datejust 31 ref. 178274-0081, provided the spring bars are of the correct diameter. Milano Straps offers a dedicated selection of 16 mm straps in various leathers and materials, all handcrafted and independent of any affiliation with Rolex S.A.

The lifespan of a leather strap depends on the type of hide, frequency of wear, and exposure to perspiration and moisture. A quality alligator or shell cordovan strap, worn regularly but not exclusively, will typically last between 2 and 4 years before replacement becomes advisable. Keeping the strap away from heat sources and allowing it to air between wearings significantly extends its service life.