Tornillo de cabeza hexagonal con rosca parcial en acero inoxidable DIN 931 = ISO 4014.
Calidades acero inoxidable A, A-2, A-4 y otras bajo consulta.
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| AISI | A | DIN EN | DESIGNACION |
| 304 | A2 | 1.4301 | X5CrNi 18-10 |
| 316 | A4 | 1.4401 | X5CrNiMo 17-12-2 |
| d | M 5 | M 6 | M 8 | M 10 | M 12 | M 14 | M 16 | M 18 | M 20 | M 22 | M 24 | M 30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Paso | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | 2.5 | 2.5 | 3 | 3.5 |
| s | 8 | 10 | 13 | 17 | 19 | 22 | 24 | 27 | 30 | 32 | 36 | 46 |
| k | 3.5 | 4 | 5.3 | 6.4 | 7.5 | 8.8 | 10 | 11.5 | 12.5 | 14 | 15 | 18.7 |
| m | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | 2.5 | 2.5 | 3 | 3.5 |
| b =< 125 | 16 | 18 | 22 | 26 | 30 | 34 | 38 | 42 | 46 | 50 | 54 | 66 |
| b 125÷200 | - | - | 28 | 32 | 36 | 40 | 44 | 48 | 52 | 56 | 60 | 72 |
| b > 200 | - | - | - | - | - | - | 57 | 61 | 65 | 69 | 73 | 85 |