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Old 01-22-2010, 08:14 PM
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135 x 7 ?

What does this number mean in needle size? I've seen 135 x 5 as well.

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Old 01-22-2010, 08:25 PM
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Quote:
Originally Posted by Coodeville
What does this number mean in needle size? I've seen 135 x 5 as well.
Looks like you need to talk to DanTwoLakes, All i know is that i'm pretty sure it's a industrial lock-stitch needle. But i believe the #s represent what style the needle is. JMO


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Old 01-23-2010, 12:49 AM
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I doubt it could be milimeters - at least for the 7.
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Old 01-23-2010, 08:07 AM
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The 135 is the NM or "number metric" designation in 100ths of a millimeter. It means the diameter of the shaft of the needle above the scarf and below the shank is 1.35 millimeters and is a European designation. The 7 is the U.S. designation, and is probably a Singer number. Are you sure the second number isn't 17? Most industrial sewing machines use a 135 x 17 needle, the first number is the NM number and the second is the U.S. designation. The "X" doesn't mean anything.
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Old 01-24-2010, 02:56 AM
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BTW, you can tell if a needle is for a home machine by the shank. All home machine needles have a flat side on the shank, and industrial needles have a round shank.
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Old 01-27-2010, 02:05 PM
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I have to correct my original answer to your question. 135x7 is the needle system that your machine uses, not the size of the needle. If you look at these two needle packages, 135x17 or DPx17 or 2167 are all interchangeable needle system numbers. The actual sizes of the needles are 140/22 and 130/21. The first number is the NM number and the second number is the U.S equivalent. Those numbers are the actual diameter of the needle above the scarf and below the shank. In either case, the higher the number the heavier the needle. I just realized my mistake when I was changing my needle and looked at these two packages.
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Old 01-31-2010, 02:35 PM
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While these are not hard and fast rules, 135x7 needles are often used in zig zag machines, 135x17 are most often used in walking foot machines. The most common needles for straight stitchers are the 16x series. All are for industrial machines.

Ed
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