Rolex · Datejust 36

Strap for Datejust 36 Rolesor Yellow Diamond / Oyster / Steel Diamond

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
Reference116243-0013
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

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Straps for the Datejust 36 116243-0013

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Datejust 36 116243-0013, seen from the bench

The Datejust 36 reference 116243-0013 is equipped with the automatic caliber 3135 certified as a chronometer. The 36mm case features hour, minute and second indications with a date function. The lugs have a width of 20mm for the strap.

Frequently asked questions

What is the lug width of the Rolex Datejust 36 116243-0013?

The lug width of the Rolex Datejust 36 116243-0013 is 20 mm. This measurement refers to the internal distance between the two lugs where the strap is inserted. Accurate verification of this dimension is essential before ordering an aftermarket strap. Use a calliper or ruler positioned between the inner edges of the metal lugs to confirm the measurement.

Which strap is most suitable for the Rolex Datejust 36 116243-0013?

The optimal choice depends on intended use and personal preference. For classic formal wear, black or brown alligator is ideal, particularly with two-tone gold and steel cases. Calf leather offers greater versatility in colours such as black, dark brown, and cognac. Shell Cordovan represents the choice for those seeking durability and exceptional patina development. For a sportier interpretation, a fabric or leather NATO strap remains elegant without compromising the instrument's formality.

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

Strap replacement requires specific tools: a spring bar remover to extract the elastic pins from the lugs. Position the watch on a soft surface, locate the small hole inside each lug, gently insert the tool to compress the internal spring, and slide the old strap outward. Repeat on the opposite side. Insert the new strap into the first lug, then the second, ensuring the pins are securely seated. If inexperienced, consult an official Rolex service centre to prevent damage to the lugs.

Can I use an aftermarket strap on my Datejust 36 116243-0013?

Yes, the Datejust 36 is fully compatible with premium aftermarket straps, provided they conform to the 20 mm lug width specification. Artisan Italian leather straps produced by specialist craftsmen frequently offer superior quality to original bracelets in terms of comfort, patina development, and longevity. Ensure the strap respects precise dimensional tolerances and that any metal buckle matches the case material: yellow gold for full gold versions, steel for two-tone configurations.

How long does a leather strap last on a Datejust 36?

Strap longevity depends on material composition, frequency of use, and maintenance practices. A premium alligator or Shell Cordovan strap, properly maintained, typically lasts 3–5 years of daily wear before exhibiting structural fatigue. Calf leather tends to have a shorter lifespan, approximately 2–3 years under intensive use. Correct maintenance—protection from excessive moisture, occasional cleaning with a soft cloth, and avoidance of prolonged water exposure—substantially extends durability. Many Rolex owners maintain multiple straps in rotation to distribute wear patterns over time.

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