Rolex Yacht-Master

Most Rolex Yacht-Master references take a 20 mm watch strap: 27 of 57. The lug width follows the case size: 35 mm case → 17 mm, 37 mm case → 17 mm, 40 mm case → 20 mm and 44 mm case → 21 mm.

Shop 18 mm Shop 20 mm Shop 21 mm

Rolex Yacht-Master lug width by case size

57 references measured. Updated 2026-11-03.

Case	Lug width	References	Watch strap attachment	For example
35 mm	17 mm	5	—	168622, 168622-0004, 168623
37 mm	17 mm · 18 mm on 1	8	—	268621, 268621-0003, 268621-0004
40 mm	20 mm	27	—	116621, 116621-0001, 116621-0002
42 mm	21 mm	4	—	226627-0001, 226658-0001, 226659-0002
44 mm	21 mm	12	—	116680, 116680-0001, 116680-0002
not recorded	17 mm	1	—	37-268655-0019

References that take a different watch strap

268622-0002: 18 mm, not the 17 mm of most 37 mm cases

Questions about the Rolex Yacht-Master

Do all Rolex Yacht-Master case sizes take the same watch strap?

No. The lug width changes with the case size: the 35 mm case takes 17 mm, the 37 mm case takes 17 mm, the 40 mm case takes 20 mm and the 44 mm case takes 21 mm. Check your case diameter before you buy.

Every Rolex Yacht-Master reference

Other Rolex families

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

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