Rolex · Datejust 36

Strap for Datejust 36 Stainless Steel Fluted / Jubilee / Blue 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
Reference116234-0142
FamilyDatejust 36
MovementRolex caliber 3135 Hours, Minutes, Seconds | Chronometer
CaseWhite 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 116234-0142

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Datejust 36 116234-0142, seen from the bench

The Datejust 36 represents the evolution of the model introduced by Rolex in 1945, the first automatic wrist watch with date indication. It features the automatic caliber 3135 with official chronometer certification. The 36mm case has 20mm lugs and integrates hour, minute, second, and date functions.

Frequently asked questions

What is the lug width of the Rolex Datejust 36 116234-0142?

The Rolex Datejust 36 reference 116234-0142 features a lug width of 20 millimetres. This measurement represents the distance between the upper and lower attachment points where the strap connects to the case. To verify this dimension with precision, use a digital calliper positioned between the two attachment seats. Twenty-millimetre straps are fully compatible with this configuration without requiring adaptors or structural modifications.

What strap is recommended for the two-tone Datejust 36?

For the Datejust 36 116234-0142 in two-tone white gold and stainless steel, we recommend alligator leather in dark brown, black, or cognac, which enhance the case's nobility without competing visually. Alligator is the classical choice owing to its natural, distinguishable grain. For those seeking visible patina development over time, vegetable-tanned calf leather in dark tones offers a compelling aesthetic evolution. Shell cordovan in deep bordeaux adds compactness and reflectivity. Heavy-cotton NATO straps or vulcanised rubber maintain the Datejust 36's sport character without compromising its inherent formality.

How do I change the strap on the Rolex Datejust 36 116234-0142?

The Rolex Datejust 36 116234-0142 is equipped with lugs free of soldered bars, enabling straightforward strap replacement. Proceed as follows: position the watch dial-down on a soft surface; locate the inclined edge of the lug with a small lever or dedicated tool; gently extract the spring pin; remove the used strap; align the new strap's lateral holes; secure the spring pin. Professional intervention is unnecessary for routine strap changes, though the Casati Milano atelier offers personalised assistance should you prefer to avoid risks.

Can I fit an aftermarket strap on this Rolex?

Yes, the Rolex Datejust 36 116234-0142 is fully compatible with premium aftermarket straps provided they respect the 20mm lug width specification. Casati Milano straps are handcrafted in Italy using premium leather—alligator, cordovan, vegetable-tanned calf—and guarantee finish and durability equivalent to watchmaking standards. A well-constructed aftermarket strap does not compromise movement functionality and offers the opportunity to personalise your Datejust 36 according to personal taste whilst maintaining reversibility of replacement.

What is the typical lifespan of a leather strap on a Rolex Datejust 36?

The longevity of a leather strap depends on leather quality, tanning treatment, and frequency of wear. A premium-grade alligator strap, worn daily, typically lasts 3–5 years before replacement becomes necessary due to natural wear. Shell cordovan, owing to its compactness, may endure 5–7 years. Vegetable-tanned calf develops visible patina within 6–12 months of regular use without compromising functionality. Casati Milano straps, crafted from premium leather with artisanal construction, carry an 18-month guarantee covering manufacturing defects and may be regenerated or replaced when excessive wear appears. Exposure to moisture, extreme climates, and perspiration accelerates natural ageing.

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