NORME PRODOTTI
| ASME B16.5: Pipe flanges and flanged fittings |
| ASME B18.2.1a – Addenda to ASME B18.2.1: Square and hex bolts and screws (Inch series) |
| ASME B18.2.2: Square and hex nuts (Inch series) |
| UNI EN 1092 – 1: Flanges and their joints – Circular flanges for pipes, valves, fittings and accessories designated by PN – Part 1: Steel flanges |
| UNI EN ISO 4014 (e.g. UNI 5737): Hex head screws with partially threaded shank. Categories A and B |
| UNI EN ISO 4017 (e.g. UNI 5739): Hex head screws with fully threaded shank. Categories A and B |
| UNI EN ISO 4762 (e.g. UNI 5931): Cap screws with hexagonal socket |
| UNI EN ISO 4032 (e.g. UNI 5588): Hex nuts, type 1 Categories A and B |
| UNI EN ISO 4033 (e.g. UNI 5587): Hex nuts, type 2 Categories A and B |
| UNI EN ISO 4035 (e.g. UNI 5589): Low (chamfered) hex nuts. Categories A and B |
