DIN 7981 Standard Tapping screws, cross recessed pan head 的尺寸
技术历史及DIN 7981的国际对应物
此项规范已取消
这项规范已被取代 DIN EN ISO 7049
十字槽盘头自攻螺钉
尺寸图和技术图
关键尺寸和技术参数
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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
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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 |
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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 |
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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 | |||||||||||||||