Thread (yarn)

Thread is a type of yarn but similarly used for sewing. It can be made out of many different materials including cotton, linen, nylon, and silk.
Thread is made from a wide variety of materials. Where a thread is stronger than the material that it is being used to join, if seams are placed under strain the material may tear before the thread breaks. Garments are usually sewn with threads of lesser strength than the fabric so that if stressed the seam will break before the garment. Heavy goods that must withstand considerable stresses such as upholstery, car seating, tarpaulins, tents, and saddlery require very strong threads. Attempting repairs with light weight thread will usually result in rapid failure, though again, using a thread that is stronger than the material being sewn can end up causing rips in that material before the thread itself gives way. Thread is a type of yarn but similarly used for sewing. It can be made out of many different materials including cotton, linen, nylon, and silk.
A denier weight specification states how many grams 9,000 meters of the thread weighs. Unlike the common thread weight system, the greater the denier number, the thicker the thread. The denier weight system, like the common weight system, also specifies the number of strands of the specified weight which were wrapped together to make the finished thread.
High temperature sewing threads provide durability and resistance to extreme temperatures. Some threads can be used for applications up to 800 ĀC (1472 ĀF). There are a variety of different sewing threads available which have different applications and benefits.
Kevlar-coated stainless steel sewing threads have a high-temperature and flame-resistant steel core combined with Kevlar coating designed to facilitate easier machine sewing. The stainless steel core has a temperature resistance of up to 800 ĀC (1472 ĀF) and the Kevlar coating is heat-resistant up to 220 ĀC (428 ĀF).
PTFE coated glass sewing threads have an excellent temperature resistance combined with a PTFE coating to provide easier machine sewing. The glass core has a temperature resistance of up to 550 ĀC (1022 ĀF) and the PTFE coating is heat-resistant up to 230 ĀC (446 ĀF).
Nomex sewing threads are inherently flame-retardant and heat-resistant with a tough protective coating which resists abrasion during the sewing operation. It is temperature resistant up to 370 ĀC (698 ĀF).
Bonded nylon sewing threads are tough, coated with abrasion resistance, rot proofing, and have good tensile strength for lower temperature applications. They are temperature-resistant up to 120 ĀC (248 ĀF).