Standard: UNI 5712 - 1975
Available sizes: M12 to M18 (4 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| M12 | 2 | 9 | 0.4 | 14 | 24 | 1.6 | 1.2 | 26.17 | 22.4 |
| M14 | 2.5 | 12 | 0.4 | 18 | 30 | 1.6 | 1.2 | 32.95 | 28.4 |
| M16 |
| 2.5 |
| 14 |
| 0.4 |
| 22 |
| 36 |
| 2 |
| 1.5 |
| 39.55 |
| 33.8 |
| M18 | 3 | 17 | 0.5 | 27 | 46 | 2.5 | 2 | 50.85 | 43.8 |
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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