Standard: DIN 34818 - 1999
Available sizes: ST2.9 to ST4.8 (4 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ST2.9 | 0.5 | 8.3 | 8 | 11.3 | 10.7 | 0.57 | 0.43 | 17.3 | 16.7 | 11 | 17 |
| ST3.5 | 0.6 | 13.3 | 13 | 11.3 | 10.7 | 0.67 | 0.53 |
| 24.3 |
| 23.7 |
| 11 |
| 24 |
| ST4.2 | 0.7 | 9.3 | 9 | 16.3 | 15.7 | 0.77 | 0.63 | 20.3 | 19.7 | 16 | 20 |
| ST4.8 | 0.7 | 17.3 | 17 | 16.3 | 15.7 | 0.77 | 0.63 | 28.3 | 27.7 | 16 | 28 |
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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