Bremont
Airco AIRCO MACH 1/WH— lug 20mm

The lug width of the Bremont Airco AIRCO MACH 1/WH is 20mm, a British military standard that permits rapid interchange onto NATO and elasticated straps. The measurement should be verified from the inner wall of one lug to the inner wall of the opposite lug, using a digital calliper.

Selection depends on intended usage. An alligator strap with vegetable tanning emphasises understated elegance; regenerated calf maintains natural patina; an authentic NATO strap references the watch's avionic heritage; a vulcanised FKM rubber strap delivers maximum technical capability in aquatic or severe environments.

Use a spring bar tool to extract the lugs from the protective lug seat. Insert the sharp pin of the tool into the lateral slot of the spring bar, lift gently to compress the internal spring and slide the bar outward. Reverse the procedure to install the replacement strap, ensuring the spring bar is fully seated.

Yes, provided the lug width is precisely 20mm. Artisanal aftermarket straps offer material and finish diversity unavailable from the manufacturer. Vegetable-tanned leather or authentic NATO canvas are recommended to maintain functional coherence with the watch's tactical ethos.

A quality alligator or calf strap, with proper maintenance (regular drying, conditioning with natural wax 2–3 times annually), lasts 8–12 years. Wear accelerates with prolonged exposure to water, perspiration, or direct sunlight. NATO or rubber straps exhibit longer durability (15+ years) under normal conditions.