Standard: DIN 7331 - 2011
Available sizes: 2 to 4 (3 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2 | 3.15 | 6.8 | 7.2 | 5.8 | 6 | 2.85 | 6 | 5.8 | 7 | 6.2 | 6.2 |
| 3 | 4.2 | 8.8 | 9.2 | 8.8 | 8 | 3.8 | 9 | 7.8 | 9 | 9.2 | 8.2 |
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.
| 4 |
| 6.25 |
| 12.75 |
| 13.25 |
| 11.75 |
| 12 |
| 5.75 |
| 12 |
| 11.75 |
| 13 |
| 12.25 |
| 12.25 |
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