Several new lines of M5, M6 and M8 of lugnuts and multi thread lugnuts have been added to SD Products catalogue, available from stock. Lugnuts, also known as extruded U nuts or chimney nuts, are ideal fasteners for heavy duty applications, ensuring a strong and reliable joint in sheet materials – metal or plastic. Applications making use of threaded bolts rather than self-tapping screws offer a more secure fixing, capable of withstanding heavier loads. Manufactured from high quality austempered carbon steel, these fasteners are widely used in the automotive industry, electrical equipment and machinery. A more durable grade of steel allows these fasteners to be used safely in a more physically demanding environments, for example on lorries and heavy construction vehicles. Special versions of these part are available, with additional sizes manufactured on request. We stock a wide variety of threads and styles.