A comprehensive range of engineering plastics from Thames Stockholders

   NYLON 66 & 6 (PA66 & PA6 extruded)



The characteristics of Nylon 66 and Nylon 6 are, with a few exceptions, broadly similar to each other. While Nylon 66 is the preferred general-purpose nylon in the UK, and is therefore the principal stocked nylon at Thames, Nylon 6 is used for the same applications throughout much of mainland Europe. The chemical name for high-quality general-purpose wear resistant engineering nylons is polyamide, and is available in a range of grades and forms to suit many applications.

Nylon 66 is harder and stronger than Nylon 6 whereas Nylon 6 absorbs slightly more moisture.

While not as fine as acetal, the machinability of un-modified nylon is good. Glass-filled grades will require the use of tipped tooling. As with all plastic materials, experience has shown that extra care must be taken with larger diameters, especially in the colder months when plastic materials lose some of their toughness and so have less resistance to machining stresses. It’s therefore important to ensure that these materials are not machined while in a chilled condition. Full machining instructions may be supplied on request.

Nylon 66 and 6 are highly resistant to hydrocarbons, alkalis, fats, oils, fuels, ethers, esters and ketones. But are not resistant to halogens, mineral acids and certain organic acids, oxidising agents. Like all polyamides, Nylon 66 will slowly absorb / exude moisture from the surrounding atmosphere. This has three significant affects. Firstly a component will change dimension so consideration must be given to this e.g. bearing clearances. Electrical insulation properties will also change – consider Nylon 12 as an alternative. Finally, high humidity will toughen Nylons, with significantly higher impact strength being recorded, although the cost is a lower tensile strength.

Typical commercial applications for NYLON 66 & 6 engineering plastic include:

  • Mechanical engineering
  • Automotive and general machinery construction
  • Plain bearings, coil bodies
  • Guide & clutch parts, gears
  • Cams, rollers, slide bearings
  • Seal rings and guide rails


  • Good mechanical properties, good chemical resistance
  • Good impact strength
  • May be used in contact with foodstuffs, subject to appropriate limits
  • Good damping qualities
  • Good sliding qualities, high wear resistance
  • Good abrasion resistance
  • Range of grades available to optimise performance

We stock Nylon 66 & 6 in sheet, rod and tube. We welcome stock enquiries from both domestic and international customers.

  Get in touch...

Thames Stockholders is one of the UK's leading suppliers of engineering plastics. To discover more about our products and to receive a competitive quotation, please call us today on +44 (0)20 8805 3282 or click here to contact us.