Rolex Datejust

Most Rolex Datejust references take a 20 mm watch strap: 14 of 18. The lug width follows the case size: 26 mm case → 13 mm and 36 mm case → 20 mm.

Shop 18 mmShop 20 mm

Rolex Datejust lug width by case size

18 references measured. Updated 2026-11-06.

CaseLug widthReferencesWatch strap attachmentFor example
26 mm13 mm4—179138, 6916, 6917
36 mm20 mm14—1600, 16000, 1601