What is the difference in Nymo Thread sizes?

Posted by Mariah Battiste on

Nymo comes in several different sizes, ranging from “OO” (thinnest) to “D” (thickest).

The most commonly available sizes of Nymo are OO, O, B and D. To get the most from the thread strength, use the thickest size that will fit through your beads. Size D is a commonly used size with size 8, 11, and 15 seed beads.

Size 00 is .127 mm in diameter and suitable for the smallest beads (size 15) or when multiple thread passes are required.
Size 0 is .1524 mm and suitable for the same purposes as size 00.


Size B is .2032 mm and one of the most commonly used thicknesses. It is suitable for a wide range of stitches and bead sizes include beads in size 8, 10, 11 and 15.

Size D is .3048 mm in diameter and suitable for similar purposes as size B.


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