Rolex · Datejust 31
Strap for Rolex Datejust 31 178341
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 178341
Selected for the 16 mm lug width
The Datejust 31 178341, seen from the bench
Frequently asked questions
What is the lug width of the Rolex Datejust 31 178341?
The lug width of the Rolex Datejust 31 ref. 178341 is 16 mm. This measurement is taken internally between the two lugs at the strap attachment point, using a digital calliper or a millimetre ruler. Respecting this dimension is essential to ensure a precise, play-free fit.
What is the best strap for the Rolex Datejust 31 178341?
For the Datejust 31 178341 in Rolesor Everose, a vegetable-tanned alligator strap is the most appropriate choice for formal settings, as its cross-grain texture complements the case's brushed and polished surfaces. For daily wear, box-calf or grain leather offers durability and versatility. Rubber is ideal for marine or active environments. All straps must be 16 mm wide.
How do you change the strap on a Rolex Datejust 31 178341?
To replace the strap on the Datejust 31 178341, you need a springbar tool or a suitable screwdriver to remove the spring bars connecting the strap to the lugs. Work on a soft surface to avoid scratching the Rolesor Everose case. Alternatively, a watchmaker or authorised retailer can perform the operation in a matter of minutes.
Are there aftermarket straps compatible with the Rolex Datejust 31 178341?
Yes, there are numerous aftermarket straps compatible with the 16 mm lug width of the Datejust 31 178341. Milanostraps.it offers a selection of handcrafted straps in alligator, calf leather, NATO, and rubber specifically sized at 16 mm. It is important to verify that the included spring bars are suitable for Rolex lugs, typically requiring a diameter of 1.8 mm.
How long does a leather strap last on a Rolex Datejust 31 178341?
The lifespan of a leather strap depends on leather quality, daily care, and exposure to perspiration and water. A high-quality alligator or calf leather strap, fitted with a deployant clasp to reduce stress on the tail, can last between 2 and 5 years with regular use. Vegetable-tanned leather develops a patina over time, improving in character with wear. Prolonged water contact should be avoided, and rotating between straps is advisable.
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

