Rolex · Datejust 31
Strap for Datejust 31 Yellow Gold Diamond / President / Silver Diamond
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 178288-0012
Selected for the 16 mm lug width
The Datejust 31 178288-0012, seen from the bench
Frequently asked questions
What is the lug width of the Rolex Datejust 31 178288-0012?
The Rolex Datejust 31 178288-0012 features a 16mm lug width. This measurement represents the distance between the inner shoulders of the lugs—the attachment points where the strap connects to the case. Accurate measurement is essential to ensure compatibility with aftermarket straps and perfect alignment without lateral play.
Which strap is recommended for the Datejust 31 178288-0012?
For the Datejust 31 in yellow gold, recommended straps include alligator with traditional tanning, vegetable-tanned calf leather, and high-grade shell cordovan. Alligator leather enhances the warmth of the gold whilst maintaining understated elegance. Vegetable-tanned calf offers pronounced texture and develops a patina over time. Shell cordovan provides structural rigidity and colour depth that amplifies sophistication. All straps should feature a deployante clasp for secure, micrometre-precision adjustment.
How do you change the strap on a Rolex Datejust 31?
Changing the strap on a Datejust 31 requires a specialised spring bar tool to extract the pins connecting the strap to the case. The pins pass through the lateral lugs and must be removed gently using a light mallet and a flat-tipped tool. Once the previous pins are extracted, the new 16mm strap is inserted by passing the pins through the side holes in the case. If you lack experience, we recommend entrusting the operation to an official Rolex service centre or a specialised watchmaker to avoid damage to the case.
Is an aftermarket strap compatible with the Datejust 31 178288-0012?
Yes, any aftermarket strap with a 16mm lug width is compatible with the Datejust 31 178288-0012, provided the width is correct and the build quality matches that of a luxury timepiece. We recommend artisanal leather straps rather than mass-produced replicas, to maintain aesthetic consistency with the watch. Always verify that the pins and lugs are made of stainless steel or corrosion-resistant metal.
How long does a leather strap last on a Rolex?
Leather strap longevity depends on material quality, tanning method and daily use. A high-grade alligator or shell cordovan strap can last 3–5 years under normal conditions. Vegetable-tanned calf typically lasts 2–4 years but develops a captivating patina. Constant exposure to water, perspiration and UV rays accelerates ageing. To extend lifespan, apply a dedicated leather conditioner regularly, clean the strap with a damp cloth and alternate between different straps to reduce concentrated wear.
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

