Standard: DIN 3771
Available sizes: 1.8 to 3.75 (8 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|
| 1.8 | 2.13 | / | / | 1.87 | 1.8±0.08 | / | / |
| 2 | 2.63 | / | / | 2.37 | 1.8±0.08 | / | / |
| 2.24 | 3.29 | / | / | 3.01 | 1.8±0.08 | / | / |
| 2.5 | 3.89 | / | / |
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.
| 3.61 |
| 1.8±0.08 |
| / |
| / |
| 2.8 | 4.64 | / | / | 4.36 | 1.8±0.08 | / | / |
| 3.15 | 5.02 | / | / | 4.72 | 1.8±0.08 | / | / |
| 3.55 | 5.3 | / | / | 5 | 1.8±0.08 | / | / |
| 3.75 | 5.45 | / | / | 5.15 | 1.8±0.08 | / | / |
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