Rolex · Datejust 36
Strap for Datejust 36 Stainless Steel / Fluted / Blue - Fluted / Oyster
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Datejust 36 126234-0050
Selected for the 20 mm lug width · workshop selection
Matte Dark Gray Alligator Strap€195
Black Alligator Strap with Light Red Edging€149
Vintage Alligator Strap Cognac€195
Hammered Pink Strap with Ecru Stitching€98
Vintage Brown Calfskin Strap — Natural Patina€98
The Datejust 36 126234-0050, seen from the bench
Frequently asked questions
What is the lug width of the Rolex Datejust 36 126234-0050?
The Rolex Datejust 36 126234-0050 is fitted with 20mm lugs. This measurement must be verified by placing a calliper on the internal spring bar attachments, measuring from outer edge to outer edge. Any strap must respect this exact dimension to ensure a proper fit and secure wearing. An incorrect measurement will create visible gaps between strap and case.
Which strap is most suitable for the Datejust 36 126234-0050?
For a Datejust 36, the ideal strap depends on your use case. Vegetable-tanned alligator is the classic choice for formal and refined everyday wear, thanks to natural texture and fascinating patination. Shell cordovan offers density and darkening over time. Premium calfskin provides scratch resistance and versatility. NATO canvas straps are ideal for those who wish rapid changing and informal styling. Synthetic rubber is perfect for humid environments. Consider the two-tone case (white gold and steel): straps in grey or blue tones complement this rare combination beautifully.
How do I change the strap on a Rolex Datejust 36?
To change the strap, you must remove the spring bars from the lugs. Rolex supplies a dedicated tool for this, but it is advisable to entrust the operation to a specialised centre. For the Datejust 36, the 20mm spring bars should be inserted with gentle pressure into the case lugs: a slight lateral, oblique movement facilitates installation. Avoid forcing to prevent damage to the case endlinks. If you order a personalised strap, always verify that the bars are pre-installed or have them fitted by a professional.
Can I use an aftermarket strap on a Rolex Datejust 36 126234-0050?
Yes, provided the strap strictly respects the 20mm lug width and is constructed with materials and finishes compatible with a two-tone case in white gold and 904L steel. An artisanal, handmade strap—such as those by Casati Milano—offers superior build quality and aesthetic customisation. Verify that the strap is at least 4.0-4.5mm thick to avoid appearing fragile relative to the case's solidity. A warranty covering manufacturing defects (minimum 12 months) is essential to protect you against cracks, loose stitching, or unstable colouring over time.
What is the average lifespan of a leather strap for the Datejust 36?
A high-quality leather strap—alligator, shell cordovan, or premium calfskin—typically lasts 3–5 years with daily wear. Vegetable-tanned alligator tends to develop cracks more slowly than industrial leather, but its patination is more visible. Shell cordovan offers superior durability (5–7 years) due to the natural fibre density. Factors such as ambient humidity, frequency of wear, and sun exposure influence longevity. Preventive maintenance—applying specific balms every 6–8 months—can extend useful life by 1–2 years. Any artisanal strap includes an 18-month warranty covering manufacturing defects, during which the maker replaces it free of charge in case of stitching failure or leather delamination.
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

