Standard: DIN 16903
Available sizes: (M3.5) to M5 (4 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| (M3.5) | 2.5 | 7 | 7 | 5 | 1 | 3.5 | 7.5 | 10.8 | 6.4 | 8.1 |
| M3 | 2 | 5.5 | 5 | 3.5 | 1 | 2 | 5.5 | 8 | 4.5 |
| 6.1 |
| M4 | 4 | 11 | 10 | 7 | 1 | 5.5 | 12 | 16.6 | 10.4 | 12.7 |
| M5 | 5 | 19 | 16 | 12 | 1 | 7 | 18 | 23.8 | 17 | 21.9 |
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.
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