Standard: GB /T 70.6 - 2020
Available sizes: (M14) to M8 (5 sizes)
| Standard Body | Standard Number |
|---|---|
| GB | GB /T 70.6 |
| DIN | DIN EN ISO 12474 |
| ISO | ISO 12474 |
| Size | P | e | r | k_max | k_min | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| (M14) | 2 | 29.48 | 30 | 45.39 | 44.61 |
| 33.4 |
| 29.67 |
| 25.154 |
| 45 |
| 30 |
| M10 | — | 13.57 | 14 | 21.33 | 20.67 | 15.7 | 13.73 | 13.716 | 21 | 14 |
| M12 | 1.5 | 19.48 | 20 | 30.33 | 29.67 | 22.4 | 19.67 | 19.437 | 30 | 20 |
| M16 | 3 | 35.38 | 36 | 54.46 | 53.54 | 39.4 | 35.61 | 30.854 | 54 | 36 |
| M8 | 1 | 9.64 | 10 | 16.27 | 15.73 | 11.2 | 9.78 | 9.149 | 16 | 10 |
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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