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Types and Sizes of Beading Thread and Stringing Material


See how a variety of beading and jewelry-making threads and light-duty cords measure up. Easy-to-use chart includes thread diameter in inches and millimeters for nylon, silk, FireLine® and more.

Applications of Stringing Material
Beads with smooth drill holes (amber, coral, etc.) Silk, polyester or nylon
Beads with abrasive drill holes FireLine® thread, polyester or nylon
Beads that are metal, large or have large drill holes *Accu-Flex®, FireLine, *Acculon® or *Tiger Tail™
Pearls Silk thread
Ropes or Woven Necklaces Nylon
*This is a smooth woven type of wire that is flexible, but will resist cutting or breaking, and is used to string heavy crystal and metal beads. The sharp edges and heavy weight of these types of beads will cut regular threading cord.

Silk

Colored American Silk
Thickest to thinnest: FFF, FF, F, E only

Silk on Card (white or colored)
Thickest to thinnest: 12, 10, 8, 6, 5, 4, 3

Silk Cords and Threads
(Cord and thread sizes are listed smallest to largest.)
Inches (") Millimeters (mm) Griffin Silk Purely Silk™ Purely Silk™ with Needle Various Silk Cord
0.0050 0.1270 ... OO ... ...
0.0060 0.1524 ... O ... ...
0.0070 0.1778 ... A ... ...
0.0080 0.2032 ... B #1-1/2 ...
0.0108 0.2743 ... C ... ...
0.0118 0.3 #0 ... ... ...
0.0120 0.3048 ... D ... ...
0.0128 0.3251 ... E #4 ...
0.0137 0.3480 ... F ... ...
0.01378 0.35 #1 ... ... ...
0.015 0.381 ... FF ... ...
0.0165 0.4191 ... FFF #8 ...
0.0177 0.45 #2 ... ... ...
0.01969 0.5 #3 ... ... ...
0.02362 0.6 #4 ... ... ...
0.02559 0.65 #5 ... ... ...
0.02756 0.7 #6 ... ... ...
0.02953 0.75 #7 ... ... ...
0.0315 0.8 #8 ... ... ...
0.03543 0.9 #10 ... ... ...
0.03858 0.98 #12 ... ... ...
0.0393 1 ... Purely Silk 3-ply Cord ... Imitation Silk Cord
0.04016 1.02 #14 ... ... ...
0.04134 1.05 #16 ... ... ...

Nylon Cords and Threads
(Cord and thread sizes are listed smallest to largest.)
Inches (") Millimeters (mm) C-Lon® Cord C-Lon Thread Griffin NylonPower Nymo® Silkon® Various Nylon Thread
0.004 0.1016 ... ... ... ... ... ...
0.005 0.127 ... ... ... OO ... ...
0.006 0.1524 ... AA ... O ... ...
0.008 0.2032 ... ... ... B ... Sono

Silamide A
0.0098 0.25 ''Micro Weight'' ... ... ... ... ...
0.0116 0.2921 ... ... ... ... #1 ...
0.012 0.3048 ... D ... D ... ...
0.013 0.33 ... ... #0 ... #2 ...
0.01378 0.35 ... ... #1 ... ... ...
0.0163 0.414 ''Fine Weight'' ... ... ... #3 ...
0.0177 0.45 ... ... #2 ... ... ...
0.01969 0.5 ''Standard Weight'' ... #3 ... ... ...
0.02362 0.6 ... ... #4 ... ... ...
0.02559 0.65 ... ... #5 ... ... ...
0.02756 0.7 ... ... #6 ... ... ...
0.02953 0.75 ... ... #7 ... ... ...
0.0315 0.8 ... ... #8 ... ... ...
0.03543 0.9 ''Heavy Weight'' ... #10 ... ... ...
0.03858 0.98 ... ... #12 ... ... ...
0.04016 1.02 ... ... #14 ... ... ...
0.04134 1.05 ... ... #16 ... ... ...

Monofilament Cords and Threads
(Cord and thread sizes are smallest to largest.)
Inches (") Millimeters (mm) FireLine Satinique™ Translucent Cords and Threads Various Monofilament Thread
0.0019 0.05 ... ... ... Kevlar® 6-Pound
0.0023 0.06 1-Pound ... ... ...
0.0031 0.08 2-Pound ... ... ...
0.0039 0.1 3-Pound ... Spiderwire® 6-Pound ...
0.005 0.13 4-Pound ... ... ...
0.0059 0.15 6-Pound ... ... ...
0.006 0.1524 8-pound NanoFil Dyneema® ... ... ...
0.0071 0.18 8-Pound ... Spiderwire 8-Pound ...
0.0078 0.2 10-Pound ... ... Kevlar 7-Pound
0.009 0.23 14-Pound ... ... ...
0.0098 0.25 ... ... Invizi™-Cord ...
0.0118 0.3 20-Pound ... ... ...
0.0393 1 ... Mini ... ...
0.59 1.5 ... Small ... ...
0.787 2 ... Regular ... ...
0.1574 4 ... Large ... ...

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