

| Technology | |||
Screws |
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Stamping Parts |
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Machined Parts |
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Pins |
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Bolts |
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Nuts |
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Washers |
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Rivets |
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Hex Wrench |
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Metric Threads Specification |
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Screw Basic Knowledge |
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Plastic & Nylon Parts |
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| Size | 3 | 4 | 5 | 6 | 6.4 | |
| d | max | 2.94 | 3.92 | 4.92 | 5.92 | 6.32 |
| min | 3.06 | 4.08 | 5.08 | 6.08 | 6.48 | |
| dk | max | 6.24 | 8.29 | 9.89 | 12.35 | 13.29 |
| min | 5.76 | 7.71 | 9.31 | 11.65 | 12.71 | |
| K | max | 1.4 | 1.7 | 2 | 2.4 | 3 |
| dl | Ref | 1.8 | 2.18 | 28 | 3.6 | 3.8 |
| R | approx. | 5 | 6.8 | 8.7 | 9.3 | 9.3 |
| r | max | 0.5 | 0.5 | 0.7 | 0.7 | 0.7 |