Strap for BR 05 Stainless Steel / Skeleton / Bracelet

The lug width of the BR05A-GR-SK-ST/SST is 20mm, the standard dimension for Instruments models with 40mm case. This specification is critical when sourcing aftermarket straps: any strap with a 20mm lug width will fit correctly into the case lugs.

For the BR05A-GR-SK-ST/SST, we recommend alligator in black or brown (emphasizes the squared geometry of the case), vegetable-tanned calf (develops natural patina over time), shell cordovan (exceptional durability), or NATO in fabric or rubber (aeronautical functionality). Choice depends on your desired balance between formal rigour and daily comfort.

Remove the strap by unscrewing the lug screws from either side of the case using a fine-tipped Phillips screwdriver. Support the case with one hand to avoid twisting. Once both screws are removed, extract the old strap and insert the new one, ensuring the lug bars align in the case lugs before tightening. Use quality tools and a properly-fitted screwdriver to avoid marring the satin-finished case.

Yes, all Milano Straps 20mm straps are fully compatible with the BR05A-GR-SK-ST/SST, as the lug width is standardised. You can choose from ready-to-ship models or commission custom straps through the Casati Milano atelier, with full customisation of leather, initials, and thread colour.

Leather strap longevity varies by material and wear: standard calf leather lasts 2-3 years with regular use; shell cordovan 4-6 years; alligator 3-5 years. Vegetable-tanned leather develops patina whilst maintaining structure; leather typically wears first at the inner lug area. Milano Straps guarantees 18 months on Casati Milano custom straps; ready-to-wear straps have comparable durability to market standard.