TAG Heuer · Formula 1

Strap for Formula 1 Chronograph Quartz Stainless Steel / Black / Bracelet

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
ReferenceCAZ1010.BA0842
FamilyFormula 1
MovementRonda caliber 5040.D hours, minutes, small seconds | date | Chronograph
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Formula 1 CAZ1010.BA0842

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Formula 1 CAZ1010.BA0842, seen from the bench

The TAG Heuer Formula 1 CAZ1010.BA0842 is a sports chronograph from the Formula 1 family, established in 1986. It features a 43 mm stainless steel case with a Ronda 5040.D quartz movement and a 20 mm lug width. The watch is water-resistant to 100 metres, equipped with a fixed steel bezel and sapphire crystal with anti-reflective coating.

Frequently asked questions

What is the lug width of the TAG Heuer Formula 1 CAZ1010.BA0842?

The lug width of the TAG Heuer Formula 1 CAZ1010.BA0842 is 20 mm. This measurement is determined by the case geometry and represents the space available between the two metal lugs where the strap is inserted. To verify the measurement, use a digital calliper positioned perpendicularly between the inner lugs without compressing the steel.

Which strap best suits the TAG Heuer Formula 1 CAZ1010.BA0842?

For the TAG Heuer Formula 1 CAZ1010.BA0842, we recommend alligator leather in vegetable tanning (tobacco or cognac brown) for visual continuity, or smooth calf leather in black or dark brown for geometric clarity. Shell cordovan is ideal for those seeking moisture resistance and crystalline patina development. On a blue dial, tobacco alligator creates harmony; on white or black dials, black alligator or bourbon red calf are elegant choices. The deployante clasp should be in brushed steel for coherence with the integrated bracelet.

How do you change the strap on a TAG Heuer Formula 1 CAZ1010.BA0842?

The TAG Heuer Formula 1 CAZ1010.BA0842 features an integrated case and bracelet; strap replacement requires removal of the original bracelet using a dedicated extraction tool (spring bar tool) supplied by TAG Heuer or available from jewellers. Position the tool in the groove of the locking spring, apply gentle upward pressure and extract the pin. Repeat on the other side. Insert the new strap by aligning the lugs to the seats, then reinsert the pins until the spring clicks into position. If you are not experienced, consult a certified watchmaker.

Is there an aftermarket strap compatible with the TAG Heuer Formula 1 CAZ1010.BA0842?

Yes, the TAG Heuer Formula 1 CAZ1010.BA0842 is compatible with aftermarket straps measuring 20 mm lug width. On milanostraps.it you will find a selection of artisanal straps in alligator, calf, shell cordovan and FKM rubber, customisable in length, initials and thread colour. The Casati Milano atelier also creates fully bespoke straps with direct consultation and 18-month warranty.

How long does a leather strap last on a TAG Heuer Formula 1 CAZ1010.BA0842?

Durability depends on leather quality, wear conditions and maintenance. A high-quality alligator or vegetable-tanned calf strap, worn daily with moderate care (avoiding prolonged sun and water exposure), lasts 3–5 years before visible wear manifests. Shell cordovan, due to its structural density, can last 5–7 years. Synthetic NATO lasts up to 10 years. Standard warranty on artisanal straps is 18 months; damage from normal wear is not covered.

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.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only