Technical Archive

Breitling
AVI A17315101C1A1— lug 21mm

Breitling AVI A17315101C1A1: 21mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Aviator 8 Automatic 41 Stainless Steel / Blue / Bracelet

Artisanal Note

"This model requires a precise 21mm lug width to preserve the original sartorial balance."

Technical Specifications

Breitling A17315101C1A1
Lug Width
21 mm

The essential strap measurement.

Browse 21mm straps →
Reference

A17315101C1A1

Movement

Breitling caliber Caliber 17 Hours, Minutes, Seconds | Date

The Heritage

The AVI represents the modern reissue of Breitling's aviator chronographs from the 1950s. It is equipped with the automatic Caliber 17 with hour, minute, second and date functions. The case features 21mm lugs for the strap.

FAQ

What is the lug width of the Breitling AVI A17315101C1A1?

The Breitling AVI A17315101C1A1 has a lug width of 21 mm. This is a non-standard measurement — neither 20 nor 22 mm — and requires straps produced specifically for this width. Always verify with a digital calliper before purchasing.

What is the best strap for the Breitling AVI A17315101C1A1?

Given the black dial and brushed stainless steel case of the AVI A17315101C1A1, a tobacco vegetable-tanned calf leather strap or a military green NATO are the most coherent choices with the watch's aeronautical aesthetic. For formal occasions, a square-grain Mississippiensis alligator strap is the benchmark option.

How do you change the strap on a Breitling AVI A17315101C1A1?

The strap is removed using a thin-tipped spring bar tool, applying gentle pressure on the internal spring bar seated in the lugs. It takes only a few minutes and requires no specialist tools, though it is advisable to have the operation carried out by a watchmaker or Breitling boutique to avoid scratching the lugs.

Are there aftermarket straps compatible with the Breitling AVI A17315101C1A1?

Yes. Milanostraps.it offers a curated selection of aftermarket straps made specifically in 21 mm width, fully compatible with the Breitling AVI A17315101C1A1. Options include calf leather, alligator, NATO and vulcanised rubber, with various buckle and deployant clasp configurations.

How long does a leather strap last on a Breitling AVI A17315101C1A1?

Longevity depends on the leather type and conditions of use. A quality vegetable-tanned calf leather strap, with regular conditioning (leather cream every 2–3 months) and protection from excessive moisture and perspiration, will retain its structural integrity for 2 to 4 years. Alligator leather, owing to its denser fibre structure, tends to last longer and develops a distinguished patina over time. A deployant clasp significantly reduces mechanical stress on the strap, extending its service life.