20x White PP Screws Plastic Nuts Bolts, Washers, M8 x 40mm, Anti-Corrosion Product Highlights Slippery at the molecular level, it does have a relatively high coefficient of friction. Polypropylene possesses good fatigue resistance. Does not break when repeatedly bent and Polypropylene is very resistant to absorbing moisture. Polypropylene has good chemical resistance over a wide range of bases and acids. Polypropylene has good impact strength. Polypropylene is a good electrical insulator 20x White nuts, 20x washers, 20x bolts M8 x 40mm, Hexagon Head Bolts. Water Resistant, Anti-Corrosion, Chemical Resistant, Strong. Product Description APPLICATIONS: Polypropylene is an economical material that offers a combination of outstanding physical, chemical, mechanical, thermal and electrical properties not found in any other thermoplastic.