Polyester Sewing Thread 20S/3
Polyester Sewing Thread 20S/3 spun from 100% YIZHENG polyester staple fiber, twisted on TFO or ring frames in S or Z direction, for luggage webbing, tarpaulin, heavy leather goods, mattress edge tape.

Product Overview
Polyester Sewing Thread 20S/3 is a 20S/3 construction spun from 100% YIZHENG polyester staple fiber. It is coarse, and three plies at 20S give a rounder, rope-like thread that resists sawing through thick material. Typical end uses are luggage webbing, tarpaulin, heavy leather goods, mattress edge tape.
- 20S/3
- 3-ply
- TFO or ring twist
- S or Z direction
- According to colour card or customized
MOQ Black and white: 500 kg; other colours: 200 kg · Supply ability 800 tons per month · Shipment 15-25 days after deposit or original L/C
What You Get From This Construction
Right weight for the fabric
At 20S/3 this is a heavy thread, so the stitch line sits with the cloth rather than on top of it.
Ply chosen for roundness
3 plies keep the cross-section round, which is what lets a thread survive thousands of passes through the needle eye.
Knotless cones
No knots in the middle of a cone, so a long run is not interrupted by a splice.
Twist to your specification
TFO or ring twist, S or Z direction, fixed in the order rather than assumed.
Even tension
Yarn evenness is controlled at carding and drawing, which prevents the tension changes that cause skipped stitches.
One mill from fiber to cone
Spinning, dyeing and rewinding happen on one site, so a quality question has one owner.
Where Polyester Sewing Thread 20S/3 Is Used
Typical end uses for this item are luggage webbing, tarpaulin, heavy leather goods, mattress edge tape.

Shoe Manufacturing
High-strength stitching holds upper and sole together through daily wear and abrasion.
Counts used here: 20S/2, 20S/3, 20S/4, 30S/2
Bag And Luggage Production
Bold stitch lines reinforce the load-bearing areas so a bag carries its contents without seam failure.
Counts used here: 20S/3, 20S/4, 30S/3, 50S/3Buyers Who Specify This Item
Garment, footwear, bag and home textile factories, and the distributors who supply them. A sewing floor does not want tons of yarn. It wants cones it can hand to an operator, in the colour on the sample, with no knots in the middle of a run.
Problems it solves
- Thread sawing through at the flex point of the upper
- Needle heat on thick leather and synthetic stacks
- Small colour lots for seasonal ranges that no large mill wants to run

Technical Data
Every value below is the figure the mill quotes for this item. Anything not confirmed is marked TBC rather than filled in.
| Product name | Polyester Sewing Thread |
|---|---|
| Yarn count | 20S/3 |
| Ply | 3-ply |
| Raw material | 100% YIZHENG polyester staple fiber |
| Colour | According to colour card or customized |
| Technics | TFO or ring twist |
| Twist direction | S or Z |
| MOQ | Black and white: 500 kg; other colours: 200 kg |
| Supply ability | 800 tons per month |
| Payment | T/T, L/C |
| Shipment | 15-25 days after receiving the deposit or original L/C |
| Packing | 12 cones/box, 10 boxes/ctn; Or according to customers requirements |
| Tensile strength | TBC - stated per lot on request |
How This Item Is Produced


What Is Checked Before It Leaves
Tensile strength, colour fastness, shrinkage and yarn evenness are the four properties controlled on the line. The mill states that its products meet OEKO-TEX Standard 100 class 1, REACH and international garment standards.
Tensile strength
Checked so the seam holds under the load the product will see.
Colour fastness
Checked so the shade survives washing and daylight.
Shrinkage
Checked so the seam does not pucker after the first wash.
Yarn evenness
Checked so tension stays constant as the thread feeds.
What You Can Change On This Item
Colour
Dyed to your colour card or a physical swatch, with a lab dip approved before bulk.
Cone and tube
Paper cone or plastic dye tube, at the cone weight your winding shop expects.
Packing and marking
Bag, box and carton counts and carton marking follow your requirement.
How It Compares
Against a finer count
A finer count gives a more discreet stitch but less seam strength. Step finer only if the thread is visible on the face of the fabric.
Against a coarser count
A coarser count adds strength but can pucker light cloth and fill the needle groove. Step coarser only if seams are failing under load.
Against a different ply
More plies at the same count give a rounder, stronger thread at slightly more bulk. This is usually the better first change.
Getting The Best Out Of It
Match the twist direction to the machine
A thread twisted against the machine untwists as it feeds and starts breaking. Confirm S or Z before ordering.
Sample on your own line
Run the sample at production speed on the machine that will make the goods, not on a bench.
Store cones dry and out of sunlight
Polyester is stable but packaging and labels are not. Keep cartons closed until the thread is needed.
Keep one approved reference
Retain an approved cone from the first accepted lot. It is the reference for every repeat order.
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Polyester Sewing Thread 50S/3
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View specificationThe same count in another form: Colour-Dyed Spun Polyester Yarn 20S/3 · 100% Spun Polyester Yarn 20S/3
Guides That Answer The Next Question

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Questions About Polyester Sewing Thread 20S/3
What is the minimum order quantity for Polyester Sewing Thread 20S/3?
MOQ is Black and white: 500 kg; other colours: 200 kg.
How is Polyester Sewing Thread 20S/3 packed?
12 cones/box, 10 boxes/ctn; Or according to customers requirements
Can you dye 20S/3 to my colour card?
Yes. Colour is dyed in our own dye house to your colour card or a physical swatch, with a lab dip approved before bulk.
How long is the lead time?
Shipment leaves 15-25 days after we receive the deposit or the original L/C. Samples are ready in 3-7 days.
Can I get a sample before ordering?
Yes. Samples are prepared within 3-7 days so you can run the thread on your own machine before committing.
Which payment terms do you accept?
T/T and L/C. FOB, CIF and DDP shipping terms are all supported.
Request A Quote For Polyester Sewing Thread 20S/3
Send the quantity, the colour and your destination port. Quotation, packing and shipment terms come back in one email.