Strap for Frank Sinatra Chronograph Stainless Steel / Black / Braclet

The lug width (or anse width) of the Oris Frank Sinatra 01 676 7574 4064-07 8 20 72 is precisely 20mm. This measurement represents the internal distance between the two horizontal pins that attach the strap to the case. This is an uncommon width, requiring careful strap selection—22mm or 18mm models will not be compatible.

For the Frank Sinatra, natural alligator or shell cordovan offer maximum sophistication, amplifying the refinement of the chronograph dial. Alternatively, vegetable-tanned calf leather provides dignified ageing and evolving patina over time. For seasonal sporty use, a heavy cotton NATO strap or vulcanised rubber strap guarantee functionality without aesthetic compromise.

Changing the strap requires the use of a spring bar tool. Position the flat end of the tool towards the interior of the lug and press gently downward to compress the internal spring of the pin—this permits extraction of the pin from its housing. Once the old strap is removed, insert the new strap through the pins, verifying that the terminal ends remain correctly positioned in the lateral slots of the case.

Yes, provided the lug width is exactly 20mm. Aftermarket straps from specialist brands (leather, NATO, rubber) are fully compatible—provided you verify the declared measurement. Atelier Casati Milano and MilanoStraps verify every strap before recommendation: compatibility is non-negotiable.

A quality leather strap (alligator, shell cordovan, vegetable-tanned calf) typically lasts 5–8 years under normal wear conditions (3–4 days per week), with minimal maintenance: occasional cleaning and drying after prolonged humidity exposure. Leather evolves, developing patina and surface cracking that enhance its charm; structural deterioration manifests when stitching begins to fail or when the strap loses elasticity and begins to tear.