Rolex Daytona

Most Rolex Daytona references take a 20 mm watch strap: 232 of 241. The lug width follows the case size: 37 mm case → 19 mm and 40 mm case → 20 mm.

Rolex Daytona lug width by case size

241 references measured. Updated 2026-11-02.

Case	Lug width	References	Watch strap attachment	For example
37 mm	19 mm · 20 mm on 1	7	—	6239, 6240, 6241
38 mm	19 mm	1	—	6265-001
40 mm	20 mm · 19 mm on 2	232	—	116500LN, 116500LN-0001, 116500LN-0002
not recorded	20 mm	1	—	26503-0004

References that take a different watch strap

6270: 20 mm, not the 19 mm of most 37 mm cases
6265: 19 mm, not the 20 mm of most 40 mm cases
6269: 19 mm, not the 20 mm of most 40 mm cases

Questions about the Rolex Daytona

Do all Rolex Daytona case sizes take the same watch strap?

No. The lug width changes with the case size: the 37 mm case takes 19 mm and the 40 mm case takes 20 mm. Check your case diameter before you buy.

Every Rolex Daytona 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 →