Strap for Nav B-Uhr 47 Handwinding Black

The lug width of the Steinhart Pilot F0303 is precisely 22mm. This measurement is taken horizontally between the inner points of both lugs where the strap is inserted. Verifying this measurement before purchasing an aftermarket strap is essential to ensure the lug holes fit snugly without excess play.

There is no universal choice—it depends on intended use. For formal wear, we recommend alligator leather with vegetable tanning, which develops patina over time. For tactical and daily use, regenerated Italian NATO material offers rapid changeover and extreme durability. For marine environments, high-density FKM rubber is the only reliable solution. The stainless steel case pairs well with all these materials.

The strap is removed using two spring bars positioned in the lugs. Using a dedicated tool or a blunt knife, gently press the spring bar inward to release tension, then slide the strap out of the lug. Insert your new 22mm strap ensuring the lug holes are aligned symmetrically. The procedure takes only seconds and requires no specialised tools.

Yes, provided the measurement is exactly 22mm. However, verify that the strap's lug holes are correctly dimensioned: oversized holes allow lateral migration, whilst undersized holes generate friction against the case. Straps crafted by specialised artisans guarantee precise tolerances. Always verify technical specifications before purchase.

A vegetable-tanned leather strap on a 47mm watch like the Pilot F0303 typically lasts 2–4 years with daily wear and regular maintenance. Wear is accelerated by perspiration, humidity and direct sunlight exposure. We recommend allowing the strap to breathe when not worn, avoiding prolonged immersion and occasionally applying protective treatment specific to vegetable-tanned leather.