Standard: DIN 72571 - 2016
Available sizes: 4 to 8 (5 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| 4 | 1 | 1.9 | 4.5 | 4 | / | 10 | 9 | 1 | 4.8 | 18.5 |
| 5 | 1 | 2.2 | 6.5 | 5 | / | 10 | 10 | 1 | 4.8 | 20.5 |
Standard corrosion protection for indoor and mild outdoor environments.
Salt spray: 96–200 hours | RoHS compliant (trivalent chromium)
High-performance coating for automotive, marine, and harsh environments.
Salt spray: 720–1500 hours | Recommended for grade 8.8+
Heavy-duty protection for structural and outdoor applications.
Salt spray: 500–1000 hours | Thread tolerance adjustment required
Note for high-strength fasteners (Grade 10.9, 12.9): Electroplating processes require hydrogen embrittlement relief baking (minimum 4 hours at 200°C within 4 hours of plating). Contact our engineering team for grade-specific plating recommendations.
Request detailed technical specifications, material certifications, and availability information for your application requirements. Our engineering team can provide product recommendations, custom specifications, and technical documentation.
| 6 |
| 1 |
| 2.7 |
| 9.5 |
| 7 |
| / |
| 10 |
| 11 |
| 1 |
| 4.8 |
| 23 |
| 7 | 1 | 7.1 | 14.3 | 10 | / | 12 | 18 | 1.5 | 5.8 | 34 |
| 8 | 1 | 8 | 17.3 | 13 | / | 12 | 18 | 1.5 | 7 | 35.5 |
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