Dimensioni delle filettature
Filettature per attacchi al processo e ingressi cavo, con dimensioni normalizzate e tipo di tenuta.
| Filettatura | Norma | Forma | Ø esterno (mm) | TPI | Passo (mm) | Fianco |
|---|---|---|---|---|---|---|
| G 1/8 | ISO 228-1 (BSPP) | Cilindrica | 9,728 | 28 | 0,907 | 55° |
| G 1/4 | ISO 228-1 (BSPP) | Cilindrica | 13,157 | 19 | 1,337 | 55° |
| G 3/8 | ISO 228-1 (BSPP) | Cilindrica | 16,662 | 19 | 1,337 | 55° |
| G 1/2 | ISO 228-1 (BSPP) | Cilindrica | 20,955 | 14 | 1,814 | 55° |
| G 3/4 | ISO 228-1 (BSPP) | Cilindrica | 26,441 | 14 | 1,814 | 55° |
| G 1 | ISO 228-1 (BSPP) | Cilindrica | 33,249 | 11 | 2,309 | 55° |
| R 1/4 | ISO 7-1 (BSPT) | Conica 1:16 | 13,157 | 19 | 1,337 | 55° |
| R 1/2 | ISO 7-1 (BSPT) | Conica 1:16 | 20,955 | 14 | 1,814 | 55° |
| 1/8 NPT | ASME B1.20.1 | Conica 1:16 | 10,287 | 27 | 0,941 | 60° |
| 1/4 NPT | ASME B1.20.1 | Conica 1:16 | 13,716 | 18 | 1,411 | 60° |
| 3/8 NPT | ASME B1.20.1 | Conica 1:16 | 17,145 | 18 | 1,411 | 60° |
| 1/2 NPT | ASME B1.20.1 | Conica 1:16 | 21,336 | 14 | 1,814 | 60° |
| 3/4 NPT | ASME B1.20.1 | Conica 1:16 | 26,670 | 14 | 1,814 | 60° |
| 1 NPT | ASME B1.20.1 | Conica 1:16 | 33,401 | 11,5 | 2,209 | 60° |
| M12×1.5 | ISO 261 | Cilindrica | 12,000 | — | 1,500 | 60° |
| M14×1.5 | ISO 261 | Cilindrica | 14,000 | — | 1,500 | 60° |
| M16×1.5 | ISO 261 | Cilindrica | 16,000 | — | 1,500 | 60° |
| M20×1.5 | ISO 261 | Cilindrica | 20,000 | — | 1,500 | 60° |
| M25×1.5 | ISO 261 | Cilindrica | 25,000 | — | 1,500 | 60° |
| 7/16-20 UNF | SAE J1926 (-4) | Cilindrica | 11,112 | 20 | 1,270 | 60° |
| 9/16-18 UNF | SAE J1926 (-6) | Cilindrica | 14,288 | 18 | 1,411 | 60° |
| PG 9 | DIN 40430 | Cilindrica | 15,200 | 18 | 1,410 | 80° |
| PG 11 | DIN 40430 | Cilindrica | 18,600 | 18 | 1,410 | 80° |
| PG 13.5 | DIN 40430 | Cilindrica | 20,400 | 18 | 1,410 | 80° |
| PG 16 | DIN 40430 | Cilindrica | 22,500 | 18 | 1,410 | 80° |