IWC Big Pilot

Most IWC Big Pilot references take a 22 mm watch strap: 129 of 146. The lug width follows the case size: 43 mm case → 21 mm, 46 mm case → 22 mm, 47 mm case → 22 mm and 48 mm case → 22 mm.

Shop 20 mm Shop 21 mm Shop 22 mm

IWC Big Pilot lug width by case size

146 references measured. Updated 2026-10-29.

Case	Lug width	References	Watch strap attachment	For example
43 mm	21 mm	11	—	IW3293-01, IW3293-03, IW3293-04
44 mm	22 mm · 21 mm on 2	5	—	IW3562-01, IW3572-01, IW3577-01
46 mm	22 mm · 20 mm on 2 · 21 mm on 1	113	—	IW5002-01, IW5002-02, IW5002-03
47 mm	22 mm	8	—	IW5030-01, IW5030-02, IW5030-03
48 mm	22 mm	8	—	IW5019-01, IW5019-02, IW5019-03
55 mm	26 mm	1	—	IW5104-01

References that take a different watch strap

IW3298-01: 21 mm, not the 22 mm of most 44 mm cases
IW3298-02: 21 mm, not the 22 mm of most 44 mm cases
IW5020-01: 20 mm, not the 22 mm of most 46 mm cases
IW5026-21: 20 mm, not the 22 mm of most 46 mm cases
IW5028-04: 21 mm, not the 22 mm of most 46 mm cases

Questions about the IWC Big Pilot

Do all IWC Big Pilot case sizes take the same watch strap?

No. The lug width changes with the case size: the 43 mm case takes 21 mm, the 44 mm case takes 22 mm, the 46 mm case takes 22 mm, the 47 mm case takes 22 mm and the 48 mm case takes 22 mm. Check your case diameter before you buy.

Every IWC Big Pilot reference

Other IWC families

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

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