1.     Nylon 66 is a type of polyamide or nylon.

2.     It, and nylon 6, are the two most common for textile and plastic industries.

3.     Nylon 66 is made of two monomers each containing 6 carbon atoms, hexamethylenediamine and adipic acid, which give nylon 66 its name.

4.     Nylon 66 is frequently used when high mechanical strength, rigidity, good stability under heat and or chemical resistance are required.

5.     It is used in fibers for textiles and carpets and molded parts.

6.     Nylon 66 lends itself well to make 3D structural objects, mostly by injection molding.

7.     It has broad use in automotive applications; these include "under the hood" parts such as radiator end tanks, rocker covers, air intake manifolds, and oil pans, as well as numerous other structural parts such as hinges, and ball bearing cages.

8.     Other applications include electro-insulating elements, pipes, profiles, various machine parts, zip ties, conveyor belts, hoses, polymer-framed weapons, and the outer layer of turnout blankets.

9.     Nylon 66 is also a popular guitar nut material.

10.   Nylon 66, especially glass fiber reinforced grades, can be effectively fire retarded with halogen-free products.