Technical Archive

Breitling
AVI A17315101B1X3— lug 21mm

Breitling AVI A17315101B1X3: 21mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Aviator 8 Automatic 41 Stainless Steel / Black / Calf / Pin

Artisanal Note

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

Technical Specifications

Breitling A17315101B1X3
Lug Width
21 mm

The essential strap measurement.

Browse 21mm straps →
Reference

A17315101B1X3

Movement

Breitling caliber Caliber 17 Hours, Minutes, Seconds | Date

The Heritage

The Breitling AVI A17315101B1X3 is a faithful reinterpretation of a 1950s cockpit chronograph originally designed for Royal Navy and military aviation pilots. This stainless steel 41mm model features the characteristic tonneau case, three-dimensional applied indices, and impeccable visual hierarchy inherited from the 1953 Ref. 765 AVI. The case houses the Breitling Caliber 17 automatic movement with hours, minutes, seconds, and date display. The 21mm lug width is a precise technical specification derived from proportional balance between dial width and case mass. Compatible straps are available in our collection.

FAQ

What is the lug width of the Breitling AVI A17315101B1X3?

The lug width of the Breitling AVI A17315101B1X3 is 21mm. This is a non-standard size compared to the more common 20mm or 22mm, so it is essential to verify this measurement with a calliper before purchasing a replacement strap.

What is the best strap for the Breitling AVI A17315101B1X3?

For the Breitling AVI A17315101B1X3, straps in semi-matte alligator leather, vegetable-tanned calf leather, or shell cordovan are the most appropriate choices for formal wear. For a sportier look faithful to the aviator-military aesthetic, a ballistic nylon NATO strap or vulcanised rubber strap are excellent alternatives. The correct width is 21mm.

How do you change the strap on a Breitling AVI A17315101B1X3?

To replace the strap on the Breitling AVI A17315101B1X3, you will need a spring bar tool to remove the spring bars from the 21mm lugs. It is advisable to work on a soft surface to protect the stainless steel case from scratches. If in doubt, it is best to consult a watchmaker or the Casati Milano atelier.

Are there aftermarket straps compatible with the Breitling AVI A17315101B1X3?

Yes, high-quality aftermarket straps compatible with the Breitling AVI A17315101B1X3 are available. The 21mm lug width requires bespoke artisan production or careful selection from available models. Milanostraps.it offers a range of compatible 21mm straps, including handcrafted options made by the Casati Milano atelier using premium materials.

How long does a leather strap last on a Breitling AVI A17315101B1X3?

The lifespan of a leather strap on a Breitling AVI A17315101B1X3 depends on leather quality and daily use. A well-maintained vegetable-tanned calf leather strap typically lasts 2–4 years; a high-quality alligator or shell cordovan strap can exceed 5–7 years with regular care. Casati Milano straps carry an 18-month production defect warranty.