Rolex · Datejust 31
Strap for Datejust 31 Yellow Gold Domed / 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 178248-0065
Selected for the 16 mm lug width
The Datejust 31 178248-0065, seen from the bench
Frequently asked questions
What is the lug width of the Rolex Datejust 31 178248-0065?
The lug width of the Rolex Datejust 31 178248-0065 is 16mm. This measurement is standard for classic ladies' Datejust models and determines compatibility with aftermarket straps. Always verify this dimension before purchasing a replacement strap to ensure perfect insertion into the case lugs.
Which strap is best suited for the Rolex Datejust 31 in yellow gold?
For the Datejust 31 178248-0065 in yellow gold, we recommend vegetable-tanned alligator (cognac or dark brown), Italian calf pull-up or waxed, or Japanese shell cordovan. These materials pair elegantly with the warmth of yellow gold without competing visually. A deployant clasp in matching yellow gold further amplifies the effect of conscious luxury.
How do you change the strap on the Datejust 31 178248-0065?
Strap change is accomplished using spring bars (small metal pins) that connect the lugs to the case. With a dedicated spring bar tool (available from specialist watchmakers), gently press the bar laterally to extract it, then slide off the old strap. Insert the new 16mm strap into the lugs and reinsert the spring bar, verifying it locks correctly on both sides. We recommend professional assistance for your first strap change.
Is a 16mm aftermarket strap compatible with the 178248-0065?
Yes, any aftermarket strap with a 16mm lug width is compatible with the Datejust 31 178248-0065. However, construction quality varies significantly: a premium Italian alligator or Japanese shell cordovan strap guarantees durability exceeding 5 years and a patina that evolves over time, distinguishing it from less refined industrial products.
How long does a leather strap last on a Rolex Datejust 31?
A quality leather strap (alligator, calf, or shell cordovan) lasts an average of 5-7 years with daily wear, depending on climate, frequency of use, and maintenance. Vegetable-tanned leather develops a patina that improves its appearance over time. To extend durability, avoid prolonged water immersion and clean the strap with a soft cloth. Casati Milano offers an 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

