Generic Cartier Watch Crown For Santos 100 W20073X8

Quantity	Discount (%)	Price
1 - 2	—	$50.00
3 - 4	5 %	$47.50
5 - 9	8 %	$46.00
10+	12 %	$44.00

Quantity

Discount (%)

Price

1 - 2

—

$50.00

3 - 4

5 %

$47.50

5 - 9

8 %

$46.00

10+

12 %

$44.00

Product Description

This is a generic replacement crown for the Cartier Santos 100 reference W20073X8, measuring 6.8mm (diameter) × 2.5mm (thread diameter) with an overall height of 5.0mm, crafted from stainless steel with a bottom thread connection designed for standard Tap 0.9mm watch stems. The Cartier Santos 100 was introduced in 2004 as a 100th-anniversary tribute to the Santos collection.

The W20073X8 is the large model featuring a 38mm × 38mm case, powered by the Caliber 049 automatic movement (based on ETA 2892-A2), and is distinguished by its signature octagonal stainless steel crown set with a faceted spinel and 100m water resistance. As an aftermarket part, this crown is suitable for watchmakers needing to replace a crown with stripped threads, degraded rubber seals, lost decorative spinel, or general restoration – restoring the watch’s winding and time‑setting functions along with its iconic appearance.

Features & Function

Quantity	Discount (%)	Price
1 - 2	—	$50.00
3 - 4	5 %	$47.50
5 - 9	8 %	$46.00
10+	12 %	$44.00

Material & Finish: High‑quality stainless steel (316L grade), polished to match the aesthetic of Cartier cases. Corrosion‑resistant and durable.

Precision Dimensions: 6.8mm diameter × 2.5mm thread diameter × 5.0mm overall height. The bottom internal thread is designed to fit a Tap 0.9mm stem – the standard Tap 10 (0.90 mm) is the most widely used stem thread size, with a NIHS Swiss standard pitch of 0.225 mm for the 0.90 mm diameter.

Fitted Movement: Complements Caliber 049 (based on ETA 2892‑A2). This automatic caliber beats at 28,800 vph (4 Hz), has 21 jewels, and offers approx. 42 h power reserve.

Crown Tube Thread: The internal thread of this crown matches a Tap 10 (0.90 mm) stem, making it broadly compatible with a wide range of automatic calibers from Cartier, Vacheron Constantin, and others that use this common Swiss thread standard.

Crown Construction: The original octagonal Cartier crown is set with a deep‑blue faceted spinel cabochon. This generic replacement is a plain polished steel crown without stone setting; its outer silhouette matches the original dimensions but omits the decorative spinel.

Operation: The crown is used for manual winding (clockwise rotation), time‑setting (pull out to the second position), and date quick‑set (depending on the movement configuration).

Water Resistance Aid: This crown relies on a push/pull design. Water resistance is maintained by the O‑ring inside the crown tube. The sealing gasket must be replaced with a new one during crown replacement to achieve 50 m water resistance.

Aftermarket Advantage: When an original crown is unavailable or too costly, this solid stainless steel generic replacement provides a cost‑effective solution to restore winding and setting functions.

FAQ

Q1: Do I need threadlocker when installing the crown, and how much do I need?
A: Yes – low‑strength (purple) threadlocker such as Loctite 222 must be applied to the first two threads of the stem to prevent the crown from unscrewing over time. The amount must be microscopic: only a miniscule film is needed. Never allow excess threadlocker to contact the O‑ring sealing surfaces or the tube.

Q2: Can this crown be used on other Cartier models or non‑Cartier watches?
A: Possibly, but only if the dimensions are exactly verified – including the 6.8 mm crown outer diameter, the thread diameter (2.5 mm, matching a 0.90 mm stem), and the overall height of 5.0 mm. The tube depth and crown guard shape differ among references. A trial fitting on the original stem is necessary. Without confirmation of these dimensions, the crown will not be fully compatible and may not seal properly.

Q3: Why does the watch still leak (bubbles from the crown) after I installed the new crown?
A: The most common reason is that the sealing O‑ring inside the crown tube has not been replaced. This crown does not include a new gasket. The original gasket may have hardened with age. Use a fresh O‑ring (approx. 1.5 mm cross‑section), apply a thin layer of silicone grease, and ensure it seats correctly in the groove before reinserting the stem.

Q4: How long does it take for the threadlocker to cure after installing a new crown?
A: The low‑strength Loctite 222 anaerobic threadlocker reaches fixture strength at room temperature (20–25°C) within 8–12 hours. The joint reaches full working strength after 24 hours. Avoid heavy torque or wrenching during this period.