Standard: DIN 25201
Available sizes: 3 to 5 (4 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 3 | M3.5 | 0.46 | 1.55 | 7.6 | 7.80 | #6 | 4.00 | 1.8 | 2.05 | 3.80 | 7.40 |
| 3.5 | M5 | 0.56 | 1.55 | 9.0 | 9.20 | #10 | 5.50 |
| 1.8 |
| 2.05 |
| 5.30 |
| 8.80 |
| 4 | — | 1.22 | 2.25 | 11.5 | 11.70 | 1/4” | 7.30 | 2.5 | 2.75 | 7.10 | 11.30 |
| 5 | — | 2.55 | 2.25 | 16.6 | 16.80 | 3/8” | 10.50 | 2.5 | 2.75 | 10.10 | 16.40 |
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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