Technical Archive

Rolex
Datejust 31 178275f-0032— lug 16mm

Rolex Datejust 31 178275f-0032: 16mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Datejust 31 Everose Fluted / President / Pink Floral

Artisanal Note

"This model requires a precise 16mm lug width to preserve the original sartorial balance."

Technical Specifications

Rolex 178275f-0032
Lug Width
16 mm

The essential strap measurement.

Browse 16mm straps →
Reference

178275f-0032

Movement

Rolex caliber 2235 Hours, Minutes, Seconds | Date | Chronometer

The Heritage

The Rolex Datejust 31 ref. 178275f-0032 is a 31mm watch powered by the automatic Rolex 2235 caliber, certified chronometer with ±2 seconds per day precision. The case is crafted in 18-carat Everose gold, Rolex's proprietary alloy combining gold, copper and platinum for fade resistance. Functions include hours, minutes, seconds and date with Cyclops lens, with water resistance to 100 metres via screw-down crown and Oyster case. The lug width is 16mm.

FAQ

What is the lug width of the Rolex Datejust 31 ref. 178275f-0032?

The Rolex Datejust 31 ref. 178275f-0032 has a lug width of 16mm. This measurement is taken between the two lugs, flush against the case, and is critical for selecting a compatible strap that fits without forcing or risking scratches on the Everose gold case.

What is the best strap for the Rolex Datejust 31 178275f-0032?

For the Everose gold case of the Datejust 31 178275f-0032, straps in vegetable-tanned alligator or shell cordovan are the most coherent choice: their natural grain and developing patina complement the quality of the precious material. For more active daily use, a vulcanised rubber strap in 16mm preserves the Oyster water resistance without aesthetic compromise.

How do you change the strap on a Rolex Datejust 31?

The Datejust 31 strap is secured to the lugs via 16mm spring bars. Removal requires a bifurcated spring bar tool to compress the spring bar ends and release the strap. It is advisable to work on a soft surface to protect the case and, if in doubt, to entrust the operation to a watchmaker or the Casati Milano atelier.

Are there aftermarket straps compatible with the Rolex Datejust 31 178275f-0032?

Yes, numerous aftermarket straps in 16mm are compatible with the Datejust 31 178275f-0032, provided they respect the exact 16mm lug width and the case-end geometry. Milano Straps offers handcrafted straps manufactured to a tolerance of ±0.2mm, available in leather, alligator, cordovan and rubber, with pin buckle or deployant clasp.

How long does a leather strap last on a Rolex Datejust 31?

The lifespan of a leather strap depends on the material and care: a quality vegetable-tanned alligator strap, used on rotation and kept away from prolonged moisture, retains its structural and aesthetic integrity for 3 to 5 years. Shell cordovan, owing to the density of its fibres, resists buckle wear particularly well. Milano Straps backs its straps with an 18-month warranty against 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.

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