Strap for Airco Mach 1 Stainless Steel / Black / Calf

The lug width of the Bremont Airco AIRCO MACH 1/BK is 20 millimetres. This standard was selected by Bremont to maintain visual balance of the 40mm case and to accommodate straps with adequate constructive thickness. Measure with a digital calliper between the two lugs (spring bars) that pass through the watch case.

The optimal choice depends on daily usage. For formal elegance, we recommend vegetable-tanned calf leather in cognac or black. For sporty-aviator wear, a cotton NATO or grey FKM rubber amplifies the technical character. Alligator leather offers the most refined option, with unique natural grain, but demands greater maintenance and care.

To change the strap, use a spring bar remover tool (or a small dedicated lever). Position it beneath the lug to gently compress the spring-loaded pins that support the lug itself, allowing extraction from the pin. Once the old lug is removed, align the new lug with the pins and it will click into place when the spring returns. A simple operation, but requires delicacy to avoid scratching the case.

Yes, any strap with a 20mm lug width is compatible. However, we recommend selecting brands that construct with precision in width and thickness: inadequate tolerances will cause lateral play or insertion difficulty. Atelier Casati Milano and milanostraps.it offer artisanal straps in leather, NATO and rubber calibrated to 20mm with constructive rigour.

Longevity depends on the tanning method and usage. Premium vegetable-tanned calf typically lasts 5–8 years of regular daily wear. Alligator leather can exceed a decade if well maintained and protected from salt water and prolonged humidity. A robust cotton NATO has virtually unlimited lifespan, limited only by mechanical wear at stress points. Periodic maintenance (leather conditioning) significantly extends strap life.