Standard: GB 6180 - 1986
Available sizes: (M14) to M8 (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (M14) | 4 | 33.1 | 34.7 | 42.7 | 7 | 50 | 49 | 55 | 53.8 | 43.7 | 8.5 |
| M10 | 2.5 | 19 | 20.3 | 25.46 | 4.5 | 28 | 27.16 |
| 30 |
| 29.16 |
| 26.3 |
| 5.7 |
| M12 | 3.5 | 27.3 | 28.6 | 36.7 | 7 | 42 | 41 | 46 | 45 | 37.6 | 8.5 |
| M5 | 1 | 5.4 | 5.7 | 7.94 | 2 | / | / | 10 | 9.78 | 8.3 | 2.6 |
| M6 | 1.5 | 8.94 | 9.3 | 11.87 | 2.8 | / | / | 16 | 15.73 | 12.3 | 3.4 |
| M8 | 2 | 13.4 | 14.1 | 18.58 | 3.5 | / | / | 21 | 20.67 | 19.1 | 4.25 |
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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