Laco
Pilot Watches 861973— lug 20mm

The lug width of the Laco Pilot Watches 861973 is 20mm. This dimension represents the distance between the inner edges of the lugs integrated into the case and is the standard construction specification for the entire Laco pilot watch family. To verify compatibility with an aftermarket strap, measure the distance between the lugs using a calliper: the value must be 20.00mm ± 0.20mm to avoid lateral play or excessive tension.

For the Laco 861973, we recommend a vegetable-tanned leather strap in dark brown or vintage grey tones, which elegantly complements the brushed stainless steel case. If you prefer versatility, a ballistic NATO strap offers moisture resistance and is faithful to the model's military heritage. For high-stress environments, butadiene rubber straps provide superior performance. Alligator leather in vintage tones offers an aesthetic upgrade for those wishing to emphasise the austere nature of the German design.

Strap replacement requires a specialised tool called a spring bar tool. Insert the flat end of the tool into the small lateral hole of the lug, applying gentle inward pressure to compress the tension spring of the bar. Once released, extract the steel bar from the lug holes. Repeat the procedure on the other side, then insert the new strap by aligning its holes with the lugs, reintroducing the bar and ensuring it clicks firmly into position. Avoid excessive twisting during the operation.

All aftermarket straps with a 20mm lug width are compatible with the Laco Pilot 861973. Milano Straps offers an extensive selection of artisanal 20mm straps, including leather, NATO, rubber, shell cordovan and alligator models. Each strap is available in various finishes (vegetable tanning, vegetable dyes, grain texture), allowing you to personalise the watch according to your style. Browse the 20mm strap collection to explore available options with rapid shipping and online customisation.

The longevity of a leather strap depends on daily use, exposure to environmental factors (moisture, heat, sunlight) and tanning quality. A high-quality artisanal vegetable-tanned strap, rotated with other straps, can last 3-5 years whilst maintaining acceptable appearance; if used daily in harsh conditions (high humidity, outdoor activities), durability reduces to 18-24 months. Vegetable tanning develops characteristic patina, an additional aesthetic value. Vegetable-tanned leather straps benefit from light leather conditioner application every 6-12 months to slow accelerated ageing and prevent cracking.