Strap for Datejust 36 Stainless Steel / Everose / Domed / Silver - Fluted - Diamond / Oyster

The lug width of the Rolex Datejust 36 126201-0040 is 20 millimetres. This dimension is specific to this model and is not compatible with straps designed for the 31mm Datejust (18mm lugs) or the Submariner (24mm lugs). Correct measurement is performed by positioning a digital calliper perpendicular to the lugs, measuring from inner edge to inner edge of the connection hole. The integrated spring bar has a diameter of 1.6 millimetres.

For a two-tone Datejust 36, alligator represents the supreme pairing: the geometric texture of the grain enhances the luminosity of Everose rose gold and the leather ages gracefully over time. Alternatively, vegetable-tanned calf offers a softer aesthetic profile and an ethical option; shell cordovan is the choice for those seeking dramatic colour evolution over 3–5 years. Chromium-tanned calf guarantees maximum daily durability; FKM rubber is indicated for those practising water sports without functional compromise.

The procedure requires a specialised tool: a case back opener or a spring bar removal lever. Position the watch on a soft surface with the case facing upwards. Locate the lug from which to extract the spring bar (usually at the position corresponding to the date change lever). Use the lever to gently push the spring bar from one side to the other until it is fully extracted. Remove the worn strap. Insert the new strap into the opposite lug, align the holes and reinsert the spring bar with uniform pressure until it clicks into place. Verify that the spring bar is completely inserted on both sides.

Yes, provided that the strap is constructed for 20mm lugs and its spring bar has a diameter of 1.6 millimetres. High-quality aftermarket straps—those crafted from genuine alligator, premium calf or shell cordovan—offer an aesthetic alternative to the original Rolex strap while maintaining full mechanical compatibility. It is essential to verify that the strap features integrated lugs rather than generic detachable spring bars; milanostraps.it provides a verified collection of 20mm straps compatible with this reference.

Durability varies significantly based on material, usage and maintenance. A quality alligator strap properly cared for lasts 5–7 years of daily use; chromium-tanned calf resists 4–6 years; shell cordovan, whilst robust, develops visible flexing after 3–4 years—but continues to function excellently. Vegetable tanning is less resistant to moisture: in maritime climates, a lifespan of 3 years is realistic. Extending useful life requires maintenance: dry the strap after water contact, condition the leather every 6–8 months with neutral wax, avoid prolonged direct sunlight exposure.