Standard: GB 37 - 1988
Available sizes: M10 to M8 (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M10 | 3 | 44 | 11.8 | 24 | 23.48 | 54 | 60 | 16.35 | 15.65 | 73 | 58 |
| M12 | 4 | 67 | 18.5 | 36 | 35.38 | 78 | 84 | 24.42 | 23.58 | 97 | 85 |
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.
| M16 |
| 5 |
| 86 |
| 26.0 |
| 48 |
| 47.38 |
| / |
| 108 |
| 32.5 |
| 31.5 |
| 121 |
| 105 |
| M5 | 1 | 12 | 3.4 | 6 | 5.70 | 18 | / | 5.24 | 4.76 | / | 16 |
| M6 | 1.5 | 18 | 4.8 | 10 | 9.64 | 26 | 32 | 7.29 | 6.71 | / | 25 |
| M8 | 2 | 28 | 9 | 16 | 15.57 | 38 | 44 | 11.95 | 11.25 | 57 | 38 |
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