Rolex
Datejust 31 178274-0082— lug 16mm

The Rolex Datejust 31 ref. 178274-0082 has a lug width of 16 mm. This measurement is specific to the 31 mm case size and is critical when selecting an aftermarket strap: a 17 mm strap will not fit correctly between the lugs, whilst a 15 mm strap will leave visible lateral play. It is always advisable to verify the lug width using a digital calliper before purchasing a replacement strap.

For the Datejust 31 in steel and white gold, the most suitable materials are vegetable-tanned alligator leather with a three-dimensional grain, shell cordovan for those who prefer a smooth surface with a natural patina, and European box-calf leather for versatile everyday wear. Colour selection should be guided by the dial: dark brown or burgundy complement light dials, whilst black pairs best with formal white or champagne dials.

The strap on the Datejust 31 is secured to the lugs via 16 mm spring bars. To replace it, use a fine-tipped or hooked spring bar tool: compress the spring bar on one side, remove it from the lug, and repeat on the other side. The procedure requires no professional tools but should be carried out carefully to avoid scratching the white gold surfaces. A microfibre protective mat is recommended during the process.

Yes. The Datejust 31 ref. 178274-0082 accepts any aftermarket strap with a 16 mm attachment and shaped ends to follow the curvature of the lugs. Milano Straps offers a selection of 16 mm straps in leather, rubber and technical materials, all handcrafted and supplied with spring bars, available with an ardillon buckle or deployant clasp. Dimensional compatibility is guaranteed by the standard lug width specification.

Longevity depends on the material and frequency of use: a box-calf leather strap worn daily has an average lifespan of 18 to 24 months before structural wear becomes apparent. Vegetable-tanned alligator, owing to the density of its natural fibres, can last 3 to 5 years with proper care. Shell cordovan is the most durable option: its compact structure resists deformation and develops a patina that improves with age. Prolonged contact with water and perspiration should be avoided to preserve the integrity of the leather.