Strap for Pilot Automatic Chronograph Silver / Bracelet

The lug width of the Formex Pilot 1100.1.8040.100 is 22mm. This dimension is standard for professional-grade pilot chronographs and is compatible with all straps featuring 22mm lugs. Measurement is performed by positioning a digital calliper in the internal recess between the two lugs, with a tolerance of ±0.15mm.

Selection depends on intended use. For formal settings, an alligator strap in brown or black with vegetable tanning delivers elegance without visual competition with the chronograph dial. For cockpit operability, a robust NATO textile strap ensures moisture resistance and rapid interchange. A vulcanised rubber strap provides maximum tactile grip during high-demand manoeuvres.

Use a spring bar tool, inserting the flat end into the lug recess and compressing the internal spring. Once compressed, extract the pin and remove the old strap. Insert the new strap, aligning the passant holes with the pin, then compress the spring again and reinsert the pin into the opposite lug. Verify that the strap sits flush before use.

Yes, all straps constructed with 22mm lugs are compatible. Milanostraps offers a curated selection of artisanal straps in alligator, calf, shell cordovan, NATO, and rubber, specifically dimensioned for this lug width. Models featuring a folding deployante clasp are particularly recommended as they reduce wrist bulk during rapid cockpit movements.

A quality leather strap, subjected to moderate use, maintains structural functionality for 3–5 years. Vegetable-tanned leather develops visible patina within 6–12 months, indicating natural ageing. An alligator strap with vegetable tanning can endure 7–10 years if kept clean and protected from prolonged stagnant moisture exposure. Replacement is aesthetic rather than technical: the strap remains secure, but its surface finish becomes irregular.