Rolex
Datejust 31 178159-0051— lug 16mm

The Rolex Datejust 31 ref. 178159-0051 features a lug width of 16mm. This dimension is the standard specification for the Datejust 31 in white gold, determined by the case geometry and lug construction. A compatible strap must measure exactly 16mm to ensure a precise fit without play.

For the Datejust 31 in white gold, the most suitable materials are: alligator with natural grain (which enhances the white gold aesthetically), premium calf leather (durable and chromatic versatility), shell cordovan (natural sheen and exceptional resistance), and for sporty usage, NATO or rubber straps. Selection depends on daily use patterns and personal aesthetic preference.

The Datejust 31 ref. 178159-0051 allows strap replacement through the extraction of the lug pins. Using a spring bar tool, gently lift the passant (lug holder) to disengage the spring mechanism and slide out the strap. The reverse procedure, executed with care, permits installation of a new strap. It is advisable to perform this operation on a soft surface to avoid scratches on the white gold case.

Yes, mounting a bespoke artisanal strap on a Datejust 31 ref. 178159-0051 is entirely feasible, provided the lug width is precisely 16mm. Many Rolex collectors opt for personalised straps in alligator, calf or shell cordovan to further enhance the timepiece. Milano Straps specialises in bespoke straps crafted at the Casati Milano atelier.

The lifespan of a leather strap depends on the material, tanning method, and frequency of use. Quality alligator may last 3-5 years in daily use before exhibiting significant wear. Shell cordovan, due to its fibrous structure, can exceed 5-7 years. Standard calf leather typically lasts 2-4 years. Regular maintenance—cleaning, conditioning, and moisture management—significantly extends useful life.