Hamilton Jazzmaster

Most Hamilton Jazzmaster references take a 20 mm watch strap: 136 of 366. The lug width follows the case size: 34 mm case → 18 mm, 36 mm case → 18 mm, 40 mm case → 20 mm and 42 mm case → 22 mm.

Shop 16 mm Shop 18 mm Shop 20 mm Shop 24 mm

Hamilton Jazzmaster lug width by case size

366 references measured. Updated 2026-10-30.

Case	Lug width	Buckle width	References	Watch strap attachment	For example
26 mm	12 mm	—	4	—	H32111140, H32111190, H32111890
29 mm	17 mm	—	5	—	H32251135, H32251733, H32251735
30 mm	14 mm · 15 mm on 2	—	8	—	H32201430, H32231110, H32231140
34 mm	18 mm · 20 mm on 8 · 16 mm on 3	—	34	—	H32305191, H32305195, H32315111
36 mm	18 mm	—	18	—	H32205890, H32215100, H32215130
37 mm	18 mm · 20 mm on 1	16 mm	16	—	H32445555, H32445585, H32455131
38 mm	20 mm · 22 mm on 5	—	13	—	H32411135, H32411555, H32411735
39 mm	24 mm	—	4	—	H32415135, H32415535, H32415555
40 mm	20 mm	18 mm	100	—	H32451101, H32451131, H32451141
41 mm	22 mm · 24 mm on 4 · 23 mm on 2	—	10	—	H32576135, H32576155, H32576515
42 mm	22 mm · 20 mm on 4	20 mm	94	—	H32546781, H32585551, H32585557
43 mm	22 mm	—	6	—	H38612133, H38612153, H38612553
44 mm	22 mm · 23 mm on 4 · 20 mm on 3	—	18	—	H32696731, H32746591, H32755131
45 mm	23 mm · 20 mm on 1	—	12	—	H32716139, H32716159, H32716533
46 mm	24 mm	—	3	—	H32816131, H32816531, H32836551
53 mm	20 mm · 22 mm on 1 · 24 mm on 1	—	3	—	H32866781
not recorded	20 mm · 18 mm on 5 · 22 mm on 2 · 15 mm on 1	—	18	—	H32441551, H32461121, H32655195

References that take a different watch strap

H42225191: 15 mm, not the 14 mm of most 30 mm cases
H42245191: 15 mm, not the 14 mm of most 30 mm cases
H32115191: 16 mm, not the 18 mm of most 34 mm cases
H32115192: 16 mm, not the 18 mm of most 34 mm cases
H32115892: 16 mm, not the 18 mm of most 34 mm cases
H32311135: 20 mm, not the 18 mm of most 34 mm cases
H32311735: 20 mm, not the 18 mm of most 34 mm cases
H32355383: 20 mm, not the 18 mm of most 34 mm cases
H36105140: 20 mm, not the 18 mm of most 34 mm cases
H36105150: 20 mm, not the 18 mm of most 34 mm cases
H36105160: 20 mm, not the 18 mm of most 34 mm cases
H36105170: 20 mm, not the 18 mm of most 34 mm cases
H36105171: 20 mm, not the 18 mm of most 34 mm cases
H32495913: 20 mm, not the 18 mm of most 37 mm cases
H36415135: 22 mm, not the 20 mm of most 38 mm cases
H36415535: 22 mm, not the 20 mm of most 38 mm cases
H36415555: 22 mm, not the 20 mm of most 38 mm cases
H36415735: 22 mm, not the 20 mm of most 38 mm cases
H36445595: 22 mm, not the 20 mm of most 38 mm cases
H32576141: 23 mm, not the 22 mm of most 41 mm cases
H32576641: 23 mm, not the 22 mm of most 41 mm cases
H32666135: 24 mm, not the 22 mm of most 41 mm cases
H32666155: 24 mm, not the 22 mm of most 41 mm cases
H32666535: 24 mm, not the 22 mm of most 41 mm cases

And 23 more in the full list below.

Questions about the Hamilton Jazzmaster

Do all Hamilton Jazzmaster case sizes take the same watch strap?

No. The lug width changes with the case size: the 34 mm case takes 18 mm, the 36 mm case takes 18 mm, the 40 mm case takes 20 mm, the 42 mm case takes 22 mm and the 44 mm case takes 22 mm. Check your case diameter before you buy.

Can two Hamilton Jazzmaster watches with a 34 mm case take different watch straps?

Yes. Of the 34 Hamilton Jazzmaster references with a 34 mm case, 23 take 18 mm, 8 take 20 mm and 3 take 16 mm. The reference number decides, not the case size alone.