DIN 7981 Standardmäßig Abmessungen für Tapping screws, cross recessed pan head
Technische Geschichte und internationale Entsprechungen von DIN 7981
Diese Norm wurde aufgehoben
Diese Norm wurde ersetzt durch DIN EN ISO 7049
Linsenkopf-Blechschrauben mit Kreuzschlitz
Maßzeichnungen und technische Diagramme
Wichtigste Abmessungen und technische Parameter
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Dimensions in mm - source DIN 7981Withdrawn |
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| Publication date: 08/1990 - Supersedes DIN 7981: 12/1984 | ||||||||||
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Ø thread size
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P
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dk max
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dk min |
k max
|
k min | recess nr. |
Type H m ref.
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Type Z m ref.
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y type C
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y type F |
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2.2
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0.8
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4.2 | 3.9 | 1.8 | 1.55 | 1 | 2.6 | 2.4 |
2
|
1.6 |
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2.9
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1.1
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5.6 | 5.3 | 2.2 | 1.95 | 1 | 3 | 2.9 |
2.6
|
2.1 |
|
3.5
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1.3
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6.9 | 6.54 | 2.6 | 2.35 | 2 | 4.2 | 3.9 |
3.2
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2.5 |
| 3.9 | 1.4 | 7.5 | 7.14 | 2.8 | 2.55 | 2 | 4.4 | 4.1 | 3.5 | 2.7 |
|
4.2
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1.4
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8.2 | 7.84 | 3.05 | 2.75 | 2 | 4.6 | 4.3 |
3.7
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2.8 |
|
4.8
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1.6
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9.5 | 9.14 | 3.55 | 3.25 | 2 | 5 | 4.7 | 4.3 | 3.2 |
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5.5
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1.8
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10.8 | 10.37 | 3.95 | 3.65 | 3 | 6.5 | 6.2 | 5 | 3.6 |
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6.3
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1.8
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12.5 | 12.07 | 4.55 | 4.25 | 3 | 7.1 | 6.7 | 6 | 3.6 |
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DIN 7981 - ≈ weight in kg x1000 pcs, (ρ=7,85 kg/dm3) - commercial sizes |
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| d thread size | ST 2.2 | ST 2.9 | ST 3.5 | ST 3.9 | ST 4.2 | ST 4.8 | ST 5.5 | ST 6.3 | |||||||
| nominal length l | |||||||||||||||
| 4.5 | 0.174 | ||||||||||||||
| 6.5 | 0.214 | 0.424 | |||||||||||||
| 9.5 | 0.274 | 0.532 | 0.84 | 1.07 | 1.26 | 1.85 | |||||||||
| 13 | 0.344 | 0.658 | 1.02 | 1.29 | 1.5 | 2.18 | 3.24 | 4.32 | |||||||
| 16 | 0.404 | 0.766 | 1.17 | 1.48 | 1.71 | 2.46 | 3.62 | 4.86 | |||||||
| 19 | 0.874 | 1.32 | 1.67 | 1.92 | 2.74 | 4 | 5.4 | ||||||||
| 22 | 1.47 | 1.86 | 2.13 | 3.02 | 4.38 | 5.94 | |||||||||
| 25 | 1.62 | 2.05 | 2.34 | 3.3 | 4.76 | 6.48 | |||||||||
| 32 | 2.84 | 3.96 | 5.67 | 7.74 | |||||||||||
| 38 | 4.52 | 6.45 | 8.82 | ||||||||||||
| 45 | |||||||||||||||
| 50 | |||||||||||||||