Standard: DIN 939 - 1995
Available sizes: (M7) to M8 (6 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| (M7) | 2 | 34 | 40 | 1.5 | / | 5 | 2.5 | 18 | 53 |
| M10 | 2.5 | 46 | 52 | 1.5 | / | 6.3 | 3.2 | 25 | 65 |
| M4 | 0.8 | 16 | 22 | / | / |
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.
| 2 |
| 1 |
| 6.5 |
| / |
| M5 | 1 | 20 | 26 | / | / | 2.5 | 1.25 | 9 | / |
| M6 | 1.5 | 26 | 32 | 1.25 | / | 3.8 | 1.9 | 12 | 45 |
| M8 | 2.5 | 42 | 48 | 1.5 | / | 6.3 | 3.2 | 22 | 61 |
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