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Nylon 6 & 66 (PA6 & PA66) Engineering PlasticNylon 6 & 66 (PA6 & PA66)

Hard Wearing Engineering Plastics for many applications

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 Smiths Metals, Nylon 6 is used for the same applications throughout much of mainland Europe.

Nylon 6 & 66 - high-quality general-purpose wear resistant engineering nylons; the chemical name 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.

Chemical Resistance

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.

Technical Assistance

Our knowledgeable staff backed up by our resident team of qualified metallurgists and engineers, will be pleased to assist further on any technical topic. Smiths Metal Centres Limited also boasts an in-house UKAS Accredited Testing Laboratory which is unique in the metal and plastics stockholding sector, and extends our professional services to all our customers.

Download Nylon 6 & 66 (PA6 & PA66) Plastics Datasheet

Typical Applications:

Mechanical engineering, automotive and general machinery construction - E.g. plain bearings, coil bodies, guide & clutch parts, gears, cams, rollers, slide bearings, seal rings and guide rails.


We offer processing options throughout the Group with over thirty power saws available to cut your material to size. It is just as economical for us to cut a single one off blank to large production runs.

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To find out more about Smiths Metal Centres extensive range of high engineering plastics, click on one of our products on the side menu of this web page.

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