Rolex
Datejust 31 278241-0002— lug 16mm

The lug width of the Rolex Datejust 31 reference 278241-0002 is 16mm. This measurement is specific to the 31mm Datejust format and is not shared with the 36mm (20mm) or 41mm (21mm) variants. Always verify this dimension with a calliper before purchasing an aftermarket strap.

For the Datejust 31 278241-0002 in Oystersteel and Everose gold, a Mississippi alligator strap with bombé grain offers the most coherent aesthetic, as the raised scales echo the fluted bezel's rhythm. Vegetable-tanned box-calf leather is ideal for those seeking understated elegance and a developing patina over time. For sportier occasions, vulcanised rubber provides comfort and water resistance.

To replace the strap on the Datejust 31, use a fine-tipped springbar tool to compress the springbars connecting the strap to the lugs. Insert the tip into the lug hole, compress the springbar and slide the strap free. Take care to protect the case with a soft cloth to avoid scratches. The replacement strap must have a 16mm attachment width.

Yes, high-quality aftermarket straps compatible with the Rolex Datejust 31 278241-0002 are available, provided they feature a 16mm lug width and springbars suitable for Rolex lugs. Milano Straps offers a curated selection of handcrafted 16mm straps, available ready to ship or made to order, with buckles and deployant clasps in steel or Everose gold-toned options.

The lifespan of a leather strap depends on the quality of the tanning process, frequency of wear and maintenance. A high-grade alligator or box-calf strap with vegetable tanning can last between three and seven years with proper care: avoid prolonged water exposure, apply a neutral conditioner every two to three months, and rotate between straps to reduce mechanical stress. The keeper and buckle hole area are the most vulnerable points of wear.