MISUMI now offers inch-size bore holes and ANSI keyways for many of our metric catalog timing pulleys. Included are MXL, XL, L and H types, as well as S1M, S3M, S5M, S8M, T and AT types.
When choosing an inch size, simply select the bore spec (HU for inch round hole, PU for inch round hole + tap, or NU for inch ANSI key groove hole + tap) and follow it with the inch hole spec (A through S = 1/8" through 1").
For example, in the part #ATP11XL037-B-NUF, "NUF" specifies an inch ANSI key groove + tap with a 1/1" bore. Note that the set screws are still metric. Remember to check the catalog page to determine size availability.