Zenith Pilot

Most Zenith Pilot references take a 20 mm watch strap: 46 of 63.

Zenith Pilot lug width by case size

63 references measured. Updated 2026-10-29.

Case	Lug width	References	Watch strap attachment	For example
40 mm	20 mm · 22 mm on 2	16	—	03.1930.681/21.C723, 03.4000.3620/21.I001, 03.4000.3620/51/I003
43 mm	20 mm · 22 mm on 5	10	—	03.4000.3652/21.I001, 03.4000.3652/51.I003, 49.4000.3652/21.I001
45 mm	20 mm · 22 mm on 6 · 23 mm on 3 · 18 mm on 1	28	—	03.2430.3000/21.C738, 03.2431.679/51.C765, 03.2434.4069/20.I010
48 mm	20 mm	6	—	03.2430.4054/21.C721, 03.2430.693/21.C723, 45.2430.4035/79.C714
60 mm	20 mm	3	—	04.2420.5011/17.C714, 04.2421.5011/17.C714, 04.2422.5011/78.C714

References that take a different watch strap

11.1943.679/63.C800: 22 mm, not the 20 mm of most 40 mm cases
49.4001.3620/63.I001: 22 mm, not the 20 mm of most 40 mm cases
03.2240.4069/21.C774: 22 mm, not the 20 mm of most 43 mm cases
03.2241.405/51.C915: 22 mm, not the 20 mm of most 43 mm cases
03.2241.4069/27.C803: 22 mm, not the 20 mm of most 43 mm cases
11.2240.405/21.C773: 22 mm, not the 20 mm of most 43 mm cases
29.2240.405/18.C801: 22 mm, not the 20 mm of most 43 mm cases
05.2430.679/17.C902: 23 mm, not the 20 mm of most 45 mm cases
11.2430.4069/21.C773: 22 mm, not the 20 mm of most 45 mm cases
11.2430.679/21.C801: 23 mm, not the 20 mm of most 45 mm cases
11.2432.679/21.C900: 23 mm, not the 20 mm of most 45 mm cases
29.2430.679/21.C753: 22 mm, not the 20 mm of most 45 mm cases
29.2430.679/21.C753 WT: 22 mm, not the 20 mm of most 45 mm cases
29.2432.4069/27.C794: 22 mm, not the 20 mm of most 45 mm cases
29.2438.679/88.C753: 18 mm, not the 20 mm of most 45 mm cases
30.2430.4069/78.C811: 22 mm, not the 20 mm of most 45 mm cases
65.2430.4069/79.C811: 22 mm, not the 20 mm of most 45 mm cases

Questions about the Zenith Pilot

Can two Zenith Pilot watches with a 45 mm case take different watch straps?

Yes. Of the 28 Zenith Pilot references with a 45 mm case, 18 take 20 mm, 6 take 22 mm and 3 take 23 mm. The reference number decides, not the case size alone.

Every Zenith Pilot reference

Other Zenith families

Inside each one the lug width often changes: it is the reference that decides.

All Zenith families → · Why the size changes inside a family →