Standard: EN 4178 - 2017
Available sizes: MJ3 to MJ6 (4 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MJ3 | 4 | 3.9 | 1.14 | 3 | 3 | 3.88 | 7 | 6.53 | 1 | 6.78 | 2.5 |
| MJ4 | 6 | 6.3 | 1.54 | 4.2 | 4.7 | 5.88 | 10 |
| 9.38 |
| 1.4 |
| 9.78 |
| 3.7 |
| MJ5 | 10 | 10.2 | 1.74 | 7.9 | 8.4 | 9.85 | 16 | 15.33 | 1.6 | 15.73 | 7.4 |
| MJ6 | 12 | 13.8 | 1.74 | 9.8 | 10.3 | 11.82 | 18 | 17.23 | 1.6 | 17.73 | 9.3 |
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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