BS 4174 21 Standard Dimensioni per Tapping screws, hexagon head
Viti autofilettanti a testa esagonale
Disegni dimensionali e diagrammi tecnici
Dimensioni chiave e parametri tecnici
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Dimensions in mm - source BS 4174 Table 21 Hexagon head self tapping screws Publication date: 10 - 1972 |
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Ø thread size
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s min
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s max |
k min
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k max |
e min
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e max
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ST 2.9
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4.82 | 5 | 1.38 | 1.62 | 5.40 | 5.8 | ||
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ST 3.5
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5.32 | 5.5 | 2.18 | 5.95 | 5.95 | 6.4 | ||
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ST 4.2
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6.78 | 7 | 2.68 | 7.60 | 7.60 | 8.1 | ||
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ST 4.8
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7.78 | 8 | 2.88 | 8.71 | 8.71 | 9.2 | ||
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ST 5.5
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7.78 | 8 | 3.85 | 8.71 | 8.71 | 9.2 | ||
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ST 6.3
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9.78 | 10 | 4.65 | 10.94 | 10.94 | 11.5 | ||
| ST 8 | 12.73 | 13 | 5.65 | 14.28 | 14.28 | 15 | ||