Rolex · Datejust 31
Strap for Datejust 31 Rolesor Everose Fluted / Oyster / White Roman
Takes 16 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Datejust 31 178271-0066
Selected for the 16 mm lug width
The Datejust 31 178271-0066, seen from the bench
Frequently asked questions
What is the lug width of the Rolex Datejust 31 178271-0066?
The lug width of the Rolex Datejust 31 reference 178271-0066 is 16 millimetres. This dimension is specific to the 31mm case model and proportionate to its overall design. Verifying this measurement precisely before ordering an aftermarket strap is essential: an incorrect lug width creates unnatural stress on the lugs or aesthetic imbalance.
What strap material is recommended for the Datejust 31 178271-0066?
We recommend genuine alligator leather in burgundy, cognac, or dark brown tones to complement the rose gold (Everose) case. Alternatively, Barenia calfskin or shell cordovan develop distinct patina over time. For robust daily wear, vulcanised FKM rubber maintains flexibility and comfort. Material selection depends on primary use: formal elegance favours leather, versatile daily wear prefers rubber or canvas NATO.
How do I change the strap on a Rolex Datejust 31?
Strap replacement on the Datejust 31 requires specialised tools: a smooth-tipped spring bar tool and spatula—never improvise. Observe the case underneath the lugs: the lug holes house spring bars that secure the bracelet or strap. Insert the spring bar tool gently into the lower lug hole, compress the spring mechanism, withdraw the bracelet end, and repeat symmetrically. Never apply uncontrolled pressure to the screw-down caseback. If uncertain, consult an authorised Rolex service centre or specialised watchmaker.
Can I use an aftermarket compatible strap on this watch?
Yes, provided the lug width is certified 16mm and materials are genuinely noble—authentic alligator, certified Barenia calfskin, or FKM rubber. A quality aftermarket strap does not diminish the watch's value if reversible with the original Jubilee bracelet. Avoid synthetic leather or approximate lug widths, which compromise aesthetics and function. Milano Straps provides bespoke 16mm straps specifically engineered for the Datejust 31, with an 18-month production defect guarantee.
What is the lifespan of a leather strap on a Datejust 31?
A genuine alligator or leather strap (vegetable or tannic tanning) worn daily on a Datejust 31 typically lasts 18–36 months before significant wear or functional tearing appears. Durability depends on: frequency of use, climate exposure (humidity, direct sunlight), tanning method (vegetable-tanned = superior longevity), leather thickness. FKM rubber offers 3–5 years. Regular maintenance—gentle cleaning and occasional conditioning with beeswax—extends lifespan. Periodic strap changes allow personality refreshment without substantial expense.
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

