COMMON SIZE DESIGNATION

ETRTO/ISO

12 1/2 x 1.75 x 2 1/4 (also 12.5 x 1.75)

47-203

12 1/2 x 2.10

54-203

12 1/2 x 2 1/4

57-203

12 1/2 x 2 1/4 x 1 1/2  (also 12 1/2 x 2 1/4)

62-203

11 x 1 3/4

47-222

14 x 1.75

47-254

350A

37-288

14 x 1 3/8 x 1 5/8  (350A)

44-288

14 x 1 3/8

37-298

16 x 1.5

40-305

16 x 1.75

47-305

16 x 1.90

50-305

16 x 2.00

54-305

16 x 2.125

57-305

16 x 2.125

62-305

400A

37-340

16 x 1 5/8

44-340

16 x 1 3/8

37-349

18 x 1.50

40-355

18 x 1.75 or (18 x 1.75 x 2)

47-355

17 x 1 1/4

32-357

17 x 1 1/4 (Moulton)

32-369

18 x 1 3/8

37-387

450 x 28A

28-390

450A

37-390

18 x 1 3/8

37-400

20 x 2 x 1 3/4

54-400

20 x 1 1/8

28-406

20 x 1.25

32-406

20 x 1.30

35-406

20 x 1 3/8

37-406

20 x 1 .50

40-406

20 x 1.75 or (20 x 1.75 x 2)

47-406

20 x 1.90

50-406

20 x 2.10

54-406

20 x 2.125

57-406

20 x 1 3/8

37-438

500 x 28A

28-440

500A   (also known as 20 x 1 3/8)  

37-440

20 x 1 3/8

37-451

22 x 1.75

47-457

550A   (22 x 1 3/8)

37-490

550 x 28A

28-490

22 x 1 3/8

37-501

24 x 3/4

19-507

24 x 1.00

25-507

24 x 1.75

47-507

24 x 1.90

50-507

24 x 1.95

51-507

24 x 3.00

75-507

600 x 28A

28-540

24 x 1 3/8

37-540

26 x 1.00

25-559

26 x 1.30

32-559

26 x 1.30

35-559

26 x 1.40

37-559

26 x 1.50

40-559

26 x 1.60

44-559

26 x 1.75  (or 26 x 1.75 x 2) (sometimes labelled 26 x 1.85 or 26 x 1.90)

47-559

26 x 1.90  (sometimes labelled 26 x 1.95)

50-559

26 x 1.95

51-559

26 x 2.10   (sometimes labelled 26 x 2.00 or 26 x 2.125)

54-559

26 x 2.125  (sometime s labelled 26 x 2.10 or 26 x 2.25 or 26 x 2.30)

7-559

26 x 2.35

60-559

26 x 2.50

62-559

26 x 3.00

75-559

26 x 3/4

19-571

650 x 20C  (26 x 3/4)

20-571

26 x 1.00

22-571

650 x 23C  (26 x 1.00)

23-571

26 x 1 3/4

47-571

26 x 1 1/2

32-584

26 x 1 1/2

35-584

26 x 1 1/2 x 1 3/8  (650 x 35B)

37-584

26 x 1 1/2   (650B standard)

40-584

650 x 28A

28-590

26 x 1 3/8  (650 x 35A) or (26 x 1 x 1 3/8)

35-590

26 x 1 3/8

37-590

650 x 38A

40-590

650 x 40A

42-590

26 x 1 1/4

32-597

27 x 1 3/8 x 1 1/2

37-609

700 x 18C

18-622

700 x 19C

19-622

700 x 20C

20-622

700 x 22C

22-622

700 x 23C

23-622

700 x 25C

25-622

700 x 28C   (28 x 1 1/8) or (28 x 1 1/8 x 1 5/8)

28-622

700 x 32C   (28 x 1 1/4) or (28 x 1 1/4 x 1 5/8)

32-622

700 x 34C  

34-622

700 x 35C   (28 x 1 3/8 x 1 5/8)

35-622

700 x 37C   (28 x 1 3/8) or (28 x 1 3/8 x 1 5/8) (sometimes labelled 700 x 35C)

37-622

700 x 38C

38-622

700 x 40C   (28 x 1.50) or (28 x 1 1/2 x 1 5/8) (sometimes labelled 700 x 38C)

40-622

700 x 42C   (28 x 1.60) (sometimes labelled 700 x 40C)

42-622

700 x 47C   (28 x 1.75) or (28 x 1 3/4 x 1 /4) (sometimes labelled 700 x 45C)

47-622

700 x 50C   (28 x 1.90)

50-622

27 x 1

25-630

27 x 1 1/8

28-630

27 x 1 1/4

32-630

28 x 1 1/2  (700B Std.)

40-635

28 x 1 3/8  (700A)

37-642