Standard: DIN 931
Available sizes: (M45) to M56 (5 sizes)
| Size | P | e | r | k_max | k_min | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| (M45) | 5 | 88.25 | 74.2 | 0.3 | 1 | 116 | 52 | 51.26 | 129 | 56.6 |
| (M52) | 6 | 110.51 | 92.9 | — | 1 | 148 | 68 | 67.26 | 161 |
| 75 |
| M42 | 4.5 | 76.95 | 64.7 | 0.3 | 1 | 102 | 45 | 44.38 | 115 | 48.6 |
| M48 | 5.5 | 99.21 | 83.4 | — | 1 | 132 | 60 | 59.26 | 145 | 67 |
| M56 | 6 | 116.16 | 97.7 | — | 1 | 156 | 72 | 71.26 | 169 | 79 |
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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