Rolex · Datejust 36

Strap for Datejust 36 Rolesor Everose Fluted / Oyster / Black

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter36 mm
Reference116231-0093
FamilyDatejust 36
MovementRolex caliber 3135 hours, minutes, seconds | chronometer
Year2018
CaseRose Gold, Stainless Steel

Recommended spring bar

Modern Rolex spring bars 20mm — 1.5mm diameter

Technical match for lug width and diameter · lug 20 mm · Ø 1.5 mm · closed lugs

All Rolex spring barsOpen →

Straps for the Datejust 36 116231-0093

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Datejust 36 116231-0093, seen from the bench

The Datejust 36 represents the evolution of the model introduced in 1945, the first self-winding wristwatch with instant date change. It is equipped with the automatic Caliber 3135 chronometer-certified, featuring hour, minute, second and date functions. The case size is 36mm with 20mm lugs in reference 116231-0093.

Frequently asked questions

What is the lug width of the Rolex Datejust 36 116231-0093?

The Rolex Datejust 36 116231-0093 features a 20-millimetre lug width. This dimension is standard for modern Datejust 36 models and is essential to verify before purchasing a replacement strap. You can measure accurately by positioning a digital calliper between the internal lug attachments, parallel to the bezel. A measurement error would result in an incompatible strap purchase.

Which strap is best for the Rolex Datejust 36 116231-0093?

There is no single definitive answer, but three exceptional options stand out: vegetable-tanned alligator in chocolate brown for formal elegance; satin-finished calf in navy blue for everyday versatility; shell cordovan for those seeking a personal signature and unique ageing character. Your choice depends on predominant usage context and aesthetic preference regarding the natural patina development over time.

How do you change the strap on a Rolex Datejust 36?

The process requires a specific spring bar tool and careful technique. Place the watch on a soft surface (felt mat), position the tool under the lug attachment to compress the internal spring, and withdraw the bar with a smooth motion. Repeat on the opposite side, then insert the new strap by aligning the holes with the case protrusions. If you lack experience, consult an authorised Rolex dealer or trusted watchmaker to avoid case scratches.

Can an aftermarket strap compatible with the Datejust 36 116231-0093 damage the watch?

A high-quality artisanal aftermarket strap poses no risk to the watch if manufactured to correct tolerances (20-millimetre lug width). Danger exists only with counterfeit or poor-quality products, where material degradation or inadequate leather rigidity may stress the lug attachments. Casati Milano straps are bespoke-made and certified with an 18-month production defect warranty.

How long does an authentic leather strap last on a Rolex Datejust 36?

Longevity varies by leather type, usage and environmental conditions. A vegetable-tanned alligator or cordovan, with proper maintenance (protection from water and direct sunlight), maintains structural integrity for 5–8 years; satin calf, being softer, requires replacement more frequently—approximately every 3–5 years. Ageing is natural and desirable: the developing patina is the signature of authentic ownership. Gentle oiling every 2–3 years with leather-specific balms will extend 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 →

Casati Milano · Via XX Settembre 15, Milan · by appointment only