Technical Archive

Rolex
Datejust 36 116243-0001— lug 20mm

Rolex Datejust 36 116243-0001: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Datejust 36 Rolesor Yellow Diamond / Jubilee / White Roman

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Rolex 116243-0001
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

116243-0001

Movement

Rolex caliber 3135 Hours, Minutes, Seconds | Chronometer

The Heritage

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.

FAQ

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.

Request an appointment →

By appointment only · Milan

The atelier's website: casatimilano.com