Rolex · Datejust 36

Strap for Datejust 36 Stainless Steel / Yellow Gold / Fluted / Champagne - Fluted / Jubilee

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
Reference126233-0039
FamilyDatejust 36
MovementRolex caliber 3235 hours, minutes, seconds | date | chronometer
Year2021
CaseYellow 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 126233-0039

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Datejust 36 126233-0039, seen from the bench

The Rolex Datejust 36 reference 126233-0039 combines sports and formal aesthetics with a two-tone case in 18-carat yellow gold and stainless steel, measuring 36 millimeters. Powered by Caliber 3235 with COSC chronometer certification and instant date function, it features the patented Cyclops lens on the date window. The lug width is 20 millimeters. This contemporary evolution of the 1945 original—the first wristwatch with automatic date change—maintains classic proportions and universal wearability with contained thickness of 11.5 millimeters.

Frequently asked questions

What is the lug width of the Rolex Datejust 36 reference 126233-0039?

The lug width of the Rolex Datejust 36 reference 126233-0039 is exactly 20 millimetres. This measurement indicates the distance between the case terminals and determines compatibility with any aftermarket strap. It is essential not to confuse this dimension with the case diameter (36mm): the lug width is the actual space into which the strap must fit. Always verify this measurement before purchasing a replacement strap to avoid incompatibility issues.

Which strap would you recommend for a two-tone gold and steel Rolex Datejust 36?

For a two-tone Datejust 36, we recommend alligator leather in dark brown or cognac tones as the primary choice: the natural grain of reptile leather enhances the case's two-tone character without competing chromatically. Alternatively, calf box offers formal sobriety and a smooth surface, whilst shell cordovan represents the premium choice for those seeking a patina that ages harmoniously with precious metals. Avoid grey or silver-toned straps that confuse the visual reading of the two-tone design.

How do you change the strap on a Rolex Datejust?

Strap replacement requires the use of a spring bar tool to remove the suspension pins. Position the tool in the designated hole of the terminal, compress the elastic pin to extract it, then remove the worn strap. Insert the new strap by aligning the holes to the case ends, then reinsert the pin until it clicks into place. If you do not possess the specific tool or prefer to avoid risk, consult a specialist atelier like Casati Milano for professional strap changes.

Is an aftermarket strap compatible and safe on a Rolex Datejust 36 reference 126233-0039?

Yes, a high-quality aftermarket strap is completely compatible and safe on the Datejust 36 reference 126233-0039, provided it respects the 20mm lug width and is manufactured to rigorous standards. Artisan-crafted straps in alligator, calf, and shell cordovan often offer superior construction quality compared to the factory bracelet, guaranteeing equivalent or superior longevity and performance. Compatibility is purely mechanical: standard Rolex suspension pins adapt to any well-constructed 20mm strap.

How long does a leather strap last on a watch like the Datejust 36?

The durability of a leather strap depends on tanning quality and daily wear conditions. An artisan-crafted alligator or shell cordovan strap with vegetable tanning can last 3–5 years under regular use (not constantly exposed to water, direct sunlight, or excessive perspiration). Calf box tends to wear more quickly (2–3 years) due to lower thickness resistance. Proper maintenance—drying after humidity exposure, storage in climate-controlled environments, occasional treatment with natural balms—significantly extends strap life.

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