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The Thread Doctors Frequently Asked Questions...

What determines the type of thread used? What is the difference between Spun Polyester and Core Threads? What is the Tex size and how does it help determine the size of the thread needed? Do you carry threads that comply  with Government Specifications? When do I need Government Spec. thread? Where do you manufacture your products? If I am doing work in a NAFTA or CAFTA country where does the thread have to be manufactured? What is organic thread and does United carry it?

If you do not see your question listed here in our FAQ section, click our Thread Doctor to ask him personally.

Question: What determines the type of thread used?

Doctor: The type of material you are sewing.  For instance if you are sewing a material that has elasticity you should use either a spun polyester or core  thread.

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Question:What is the difference between Spun Polyester and Core Threads?

Doctor: Spun Polyester is made from  polyester fibers which are spun into single yarns then plied into a thread. Core threads are made from a polyester filament core around which is  wrapped a cotton or polyester cover. The cotton wrap provides excellent sewability because it provides good needle heat resistance. Note: The polyester core is stronger than the cotton wrap and spun polyester.

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Question:What is the Tex size and how does it help determine the size of the thread needed?

Doctor: Tex Size is a ticket size of sewing thread that is based on the weight of 1000 meters of natural thread. For example if the weight is 400 milligrams the thread would be ticketed T-40. Note: The higher the Tex size the heavier the sewing thread.

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Question:Do you carry threads that comply  with Government Specifications?

Doctor: We carry all Government Spec threads in all sizes and provide Compliance Certificates.

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Question: When do I need Government Spec. thread?

Doctor: You only need threads which comply to Government Specs if you are doing government contracts or the manufacturer specifies such.

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Question: Where do you manufacture your products?

Doctor: Most of our products are Made in the USA although we do carry some imported products.

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Question: If I am doing work in a NAFTA or CAFTA country where does the thread have to be manufactured?

Doctor: Made in USA thread can be used in both  programs while imported thread can be used only in NAFTA programs.

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Question: What is organic thread and does United carry it?

Doctor: Organic thread is 100% cotton sewing thread made from cotton grown in pesticide free fields. It is then processed in an environment free potentially hazardous chemical. It is available in 3 sizes, T-35,T-70 and T-105.

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