Strap for Chronomaster Aviator Sea Diver Automatic Stainless Steel / Black / Bracelet

The lug width of the Nivada Grenchen 86001A-BRAC is 20 millimetres. This measurement must be verified using a digital calliper, measuring the internal distance between the two shoulders of the strap attachment lugs. It is a specific dimension, not a generalised commercial standard, and ensures correct compatibility with Milano Straps' strap collection.

For the Nivada Grenchen 86001A-BRAC we recommend straps in shell cordovan with vegetable tanning, alligator in natural brown tone, grey or black cracked NATO, or FKM rubber for diving use. The choice depends on the context: cordovan offers aesthetic contrast with the brushed steel case, NATO preserves the aviator identity, rubber guarantees aquatic performance.

Proceed with a spring bar remover, inserting the thin tip beneath the metal pin (spring bar) connecting the strap to the lug. Gently lift to disengage the pin, then extract it completely. Insert the new 20mm strap beneath the pin, verify it clicks into position, and check for lateral play. Repeat for both lugs.

All Milano Straps straps with 20mm lug width are compatible with the Nivada Grenchen 86001A-BRAC. Always verify the technical specification 'lug width 20mm' before purchase. The collection includes full-grain leather options, NATO, vulcanised rubber, with finishes in various colours and textures.

A high-quality leather strap, such as those offered by Milano Straps, develops characteristic patina within 6–12 months of regular wear. Structural durability extends to 3–5 years, provided leather is protected from prolonged immersion and maintained with natural conditioners. FKM rubber retains elasticity for 2–3 years, canvas NATO for 4–5 years.