Standard: DIN 548 - 2024
Available sizes: M2 to M4 (4 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| M2 | 0.45 | 0.55 | 6.64 | 2.2 | 1.2 | 1.34 | 1.3 | 1.6 | 7 | 1.95 |
| M2.5 | 0.7 | 1.78 | 9.64 | 3.5 | 1.5 | 1.64 | 1.8 | 2.2 | 10 | 3.2 |
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.
| M3 | 1 | 4.7 | 13.57 | 5 | 2.5 | 2.64 | 2.8 | 3.2 | 14 | 4.7 |
| M4 | 1.5 | 18.7 | 21.48 | 8 | 3.5 | 3.68 | 3.8 | 4.3 | 22 | 7.64 |
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