Construction fastener

stainless steelsteelgalvanized

Our range of hot forged bolts extends from diameter M8 to diameter M39. We work with all types and grades of carbon steel (S235, S355, C35, C45, 34CD4, 42CD4, etc.) and stainless steel (304L, 316L, Duplex, etc.) with or without heat treatment. In addition to the ISO 4014 4015 4017 and DIN 931 933 standard hexagonal head ranges, we also produce square head screws, countersunk head square collar, TRCC (Round Head Square Collar) also called Japy according to DIN 603 or NFE 27351 standards, etc Our screws are generally delivered with the corresponding nuts: ISO 4032 or DIN 934. We can also study any specific needs: non-standard head shape with collar for example, very long bolts (our production tool allows us to form heads at the end of bars that can reach several meters), curved bolts, etc You can find our products in a wide variety of applications and fields: Power lines, railways, timber construction with hot-dip galvanized structural bolts, steel construction, etc. The quality classes offered range from class 4.6 to class 10.9 according to ISO 898. When the parts are not delivered raw, they mainly receive anti-corrosion protection by hot-dip galvanizing: this is carried out in our own SMA subsidiary. We can also offer any other type of coating: standard galvanizing, lamellar zinc, paint, etc.