Standard: DIN 137
Available sizes: 3 to 6 (5 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 3 | 3.7 | 0.154 | 0.9 | 7.55 | 0.5 | 4 | 8 | 0.45 | 1.8 | 8.45 | 0.55 |
| 3.5 | 5.3 | 0.286 | 1.1 | 10.45 | 0.5 | 5.6 | 11 | 0.45 | 2.2 | 11.55 | 0.55 |
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.
| 4 |
| 7.4 |
| 0.7 |
| 1.5 |
| 13.45 |
| 0.8 |
| 7.76 |
| 14 |
| 0.74 |
| 3 |
| 14.55 |
| 0.86 |
| 5 | 10.5 | 2.04 | 2.1 | 20.35 | 1 | 10.93 | 21 | 0.93 | 4.2 | 21.65 | 1.07 |
| 6 | 15 | 5.51 | 3 | 27.35 | 1.6 | 15.43 | 28 | 1.52 | 6 | 28.65 | 1.68 |
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