TAG Heuer · Formula 1
Strap for Formula 1 Kith New York
Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Formula 1 WA126A.BT0005
Selected for the 18 mm lug width
Vintage Brown Calfskin Strap — Natural Patina€98
Hammered Pink Strap with Ecru Stitching€98
Hammered Yellow Strap with Ecru Stitching€98
Grey Hammered Leather Strap with Ecru Stitching€98
Swift Red Leather Strap€120
Hammered calfskin strap in cuoio€98
The Formula 1 WA126A.BT0005, seen from the bench
Frequently asked questions
What is the lug width of the TAG Heuer Formula 1 WA126A.BT0005?
The lug width of the TAG Heuer Formula 1 WA126A.BT0005 is 18mm. This measurement must be verified by measuring the internal distance between the case lugs, from edge to edge, where the strap attaches. Maintaining this millimetre precision is essential to ensure correct and secure strap fitting to your timepiece.
Which strap is recommended for the TAG Heuer Formula 1 WA126A.BT0005?
For the WA126A.BT0005, we recommend hand-dyed alligator leather for sporty elegance, vegetable-tanned calfskin for natural ageing character, or Cordura canvas NATO for practicality and tool-free rapid strap changes. Your choice depends on intended use: alligator for semi-formal occasions, NATO for sports and outdoor activities, FKM rubber for aquatic environments. All materials must comply with the 18mm lug width specification.
How do I change the strap on the TAG Heuer Formula 1 WA126A.BT0005?
To change the strap, use a spring bar tool (professional implement with two curved ends) to gently compress the lug springs. Position the tool on one lug and press downward to retract the spring, then extract the spring bar. Repeat on the opposite side. Align the new strap holes with the lugs and verify that the strap lug depth fits securely, ensuring the bar clicks firmly into place.
Is an aftermarket strap compatible with the TAG Heuer Formula 1 WA126A.BT0005?
Yes, any artisanal strap with an 18mm lug width is fully compatible with the WA126A.BT0005. Always verify that your strap is manufactured for 18mm lugs (not 16mm or 20mm) and that the lug depth accommodates the case geometry. Premium artisanal straps, such as those from Casati Milano, offer customisation, superior materials, and enhanced durability compared to standard OEM options.
How long does a leather strap last on the TAG Heuer Formula 1 WA126A.BT0005?
A high-quality artisanal leather strap, featuring vegetable tanning and professional stitching, typically lasts 3–5 years under regular daily use. Longevity depends on moisture exposure, perspiration, temperature fluctuations, and cleaning frequency. A vegetable-tanned calfskin strap ages gracefully, developing patina and character. Casati Milano straps include an 18-month warranty against manufacturing defects and offer restoration services to extend service life.
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only
