The DaHo Hollow Spectra Threading Needles are hollow inside, except for the point, so monofilament or fluorocarbon line can be inserted into the needle. Then, the needle with the internal mono/fluoro line, is inserted, or threaded, into the hollow center section of the spectra braid. The needle, and attached mono/fluoro line, is typically inserted inside of the spectra from 3 to 5 feet to provide the best strength of the join. Because of the slick surface of the mono/fluoro line, the end point of the spectra must be finished to secure it to the mono/fluoro line. This finishing is usually done by gluing, serving, crimping, or some combination of these attachments, to the spectra line end. This ensures the join will not slip before the compression pressure occurs in the braid of the hollow spectra line to hold the joined lines together.
The primary size of the threading needle is the ID, or Internal Diameter, indicating the approximate size of the mono/fluoro line that it will fit inside. The threading needle size you need is determined by the size of the mono/fluoro line you are using. The ID sizes of our threading needles can vary up to .002" due to the Stainless Steel Hypodermic tube manufacturing process. This is the standard acceptable size variance of the SS tubes we use to make our needles. As we receive new shipments of needles, the IDs may change up to this .002" size. It is recommended that you select a needle that is at least .002" larger than your line for ease of use. It can also be difficult to fit an exact size of line into a needle. If you have a problem with your line not fitting into one of our needles, please send us an email and we will analyze and resolve the problem.
|OD Size||ID Size*||Spectra Sizes|
|N02017||10 to 20# Small Threading Needle||5.3"||.025"/.635mm||.017"/.430mm||up to 60#|
|N03020||20 to 30# Small Threading Needle||5.4"||.028"/.710mm||.020"/.510mm||up to 80#|
|N04023||30 to 40# Small Threading Needles||5.5"||.032"/.810mm||.023"/.580mm||up to 80#|
|N05026||40 to 50# Threading Needle||5.6"||.036"/.900mm||.026"/.670mm||60 to 130#|
|N06032||50 to 60# Threading Needle||5.7"||.042"/1.06mm||.032"/.810mm||80 to 130#|
|N08038||60 to 80# Threading Needle||5.8"||.050"/1.27mm||.038"/.960mm||100 to 300#|
|N10042||80 to 100# Threading Needle||5.9"||.050"/1.27mm||.042"/1.06mm||100 to 300#|
|N13047||100 to 130# Threading Needle||6.0"||.058"/1.48mm||.047"/1.19mm||130 to 300#|
|N15053||130 to 150# Threading Needle||6.1"||.065"/1.65mm||.053"/1.35mm||200# and up|
|N20060||150 to 200# Threading Needle||6.2"||.072"/1.83mm||.060"/1.50mm||200# and up|
|N30067||200 to 300# Big Threading Needle||6.3"||.083"/2.11mm||.067"/1.70mm||300# and up|
|N40077||300 to 400# Big Threading Needle||6.4"||.095"/2.41mm||.077"/1.96mm||400# and up|
|N50091||400 to 500# Big Threading Needle||6.5"||.0109"/2.77mm||.091"/2.31mm||500# and up|
We have created PDF and Excel spreadsheet charts that show all of the line brands and sizes that we could find. These charts show which of our threading needle sizes should be used for that brand and size of monofilament and fluorocarbon lines. On these threading needle size charts, we have included the .002" size variance to ensure the selected threading needle size will fit your line. When you are done, you can return here by selecting the back arrow on the left side top of each window.
If your line is not on our charts, your line size can usually be found on the spool the line was purchased on, or by visiting the line manufacturer’s website. You will usually want to get a needle that will fit the line you are using, and provide and additional .002" of 'free' space to ease the insertion of your line.
If the mono/fluoro line is too large for the needle, you will have to cut it down, which is not much fun to do. The needles will hold smaller sizes of mono/fluoro line, up to a point, without issue. We offer most typically used sizes in our standard product offerings. We also offer 'special' sizes of needles for use with very small and large mono/fluoro lines, that are not commonly used. All are named for the typical size range of mono/fluoro that they will hold, but you really need to select your needles by the actual size of your mono/fluoro line, as the line size can vary a lot.
In Threading needles, we typically use thinner walled tubing to manufacture the needle. This is so the overall size of the needle will remain as small as possible, while offering the largest interior size to hold the monofilament or fluorocarbon line you are using. Thinner is definitely better in this case, and our needles are the thinnest available.