Rolex · Datejust 36
Strap for Datejust 36 Stainless Steel / Everose / Smooth / Black Diamond / 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 126201-0020
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 126201-0020, seen from the bench
Frequently asked questions
What is the lug width of the Rolex Datejust 36 reference 126201-0020?
The Rolex Datejust 36 reference 126201-0020 features a 20-millimetre lug width. This dimension represents the distance between the two vertical case lugs where the strap is secured via spring bars. Accurate measurement is critical using a calibrated ruler or orthogonal photography, as even 1mm deviation causes excessive play or incompatibility with the spring bar seats.
Which strap material works best with the two-tone Datejust 36?
For the Datejust 36 in Everose gold and stainless steel, American alligator represents the most refined choice: its fine grain texture develops patina over time and harmonises perfectly with the two-tone case. Italian vegetable-tanned calf offers softness and versatility for those preferring traditional leather. Shell cordovan in dark tones (black, deep mahogany) introduces British formality. For summer, silk-cotton NATO or vintage canvas maintains chromatic balance without visual heaviness. Natural isoprene rubber in black with polished steel deployante remains legitimate for smart-casual wear.
How do you correctly change the strap on a Rolex Datejust 36?
The strap is secured by two spring bars positioned in the case lugs. Always use a dedicated spring bar tool to compress the internal spring without scratching the case. Remove the right strap first by pushing inward on the spring, extract the bar, then repeat on the left side. Install the new strap by inserting the right bar first, ensuring the spring is fully seated in the lug, then the left. Verify secure installation by gently pulling in opposite directions. Never use flathead screwdrivers or improvised tools that damage case finish.
Are aftermarket straps compatible with the Datejust 36 126201-0020?
Yes, any strap with a 20mm lug width is compatible with the Datejust 36 126201-0020, provided thickness does not exceed 4-5mm (otherwise the keeper loop may not adhere properly). Artisanal straps in alligator, calf, or shell cordovan offer superior quality to the original Jubilee bracelet in terms of patina development and personalisation. Always verify that suspension spring bars are 316L stainless steel or better and the keeper loop is proportionate (minimum 18mm width) for aesthetics and safety.
What is the typical lifespan of a leather watch strap before replacement?
An artisanal leather strap in premium hides (alligator, calf, shell cordovan) lasts 3-7 years with proper care, depending on usage and climate exposure. Frequent exposure to humidity, direct heat, and UV rays accelerates ageing. Progressive patina is normal and desirable, indicating natural leather evolution. When the strap begins separating at stitching, cracking irregularly, or fibres visibly fray, replacement is warranted. Preventive treatment with natural oils every 6-12 months significantly extends lifespan. Artisanal ateliers typically offer minimum 18-month warranty on manufacturing defects.
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

