Rolex · Datejust 36

Strap for Datejust 36 Rolesor Yellow Diamond / Jubilee / White Roman

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
Reference116243-0001
FamilyDatejust 36
MovementRolex caliber 3135 hours, minutes, seconds | chronometer
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 116243-0001

Selected for the 20 mm lug width · workshop selection

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The Datejust 36 116243-0001, seen from the bench

The Rolex Datejust 36 116243-0001 is a two-tone timepiece combining 18-carat yellow gold and stainless steel, featuring a 36mm case diameter and 20mm lug width. It houses the Rolex caliber 3135 automatic movement with Paraflex balance and COSC chronometer certification. Introduced in 1945 as the first automatic chronograph with date window, the Datejust remains the classical standard, with this Jubilee bracelet configuration representing proportioned design refined across eight decades.

Frequently asked questions

What is the lug width of the Rolex Datejust 36 116243-0001?

The lug width of this Datejust 36 is 20 millimetres. This is the standard distance between the attachment lugs on the case. To verify, measure the distance between the pin axes at 12 and 6 o'clock. Knowing this measurement is essential before purchasing an aftermarket strap, as an incorrect width will not fit properly on the case.

Which strap is best suited for a two-tone Rolex Datejust 36?

For a two-tone yellow gold and stainless steel Datejust 36, we recommend genuine alligator with regular grain, or calf leather with vegetable tanning in dark brown or aged tobacco tones. Alligator enhances the case's sophistication, whilst vegetable-tanned calf offers greater daily durability. Avoid colours that compete in luminosity with the gold: deep black, burgundy and aged brown are refined choices.

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

Strap replacement requires a specific tool to extract the springbars from the case lugs. Place the watch on a soft surface, locate the access groove, and insert the tool into the small hole to compress the internal spring. Once extracted, remove the old strap; align the new one and reinsert the springbars. If inexperienced, consult a professional to avoid scratching the case.

Is an aftermarket strap compatible with the Rolex Datejust 36 116243-0001?

Yes, provided the strap has a 20mm lug width and compatible thickness with the case lugs. Quality aftermarket straps maintain dimensions and proportions faithful to Rolex standards, avoiding awkward visual effects. Choose certified craftsmanship: a reputable brand guarantees correctly positioned holes with proper tolerances.

How long does a leather strap last on a daily-worn watch?

A premium leather strap with vegetable tanning or alligator typically lasts 4–6 years with daily wear, unless exposed to prolonged saltwater or excessive humidity. Longevity depends on maintenance: avoid direct contact with cleaners, protect the leather from dirt and perspiration with regular brushing, and apply mink oil once yearly. A 20mm width experiences less stress than larger sizes, so it tends to age gracefully rather than degrade.

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.

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