Standard: GB /T 3747 - 2008
Available sizes: (14) to 8 (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (14) | L | 12 | 27.8 | 32 | 32.2 | 10 | M36X2 | 28 | 28.2 | 24 | 31.8 |
| 10 | L | 10 | 14.8 | 19 | 19.2 | 25 | M22X1.5 | 15 |
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.
| 15.2 |
| 12 |
| 18.8 |
| 12 | L | 10 | 17.8 | 22 | 22.2 | 16 | M26X1.5 | 18 | 18.2 | 15 | 21.8 |
| 15 | L | 14 | 34.8 | 40 | 40.2 | 10 | M45X2 | 35 | 35.2 | 30 | 39.8 |
| 6 | L | 8 | 7.8 | 12 | 12.2 | 25 | M14X1.5 | 8 | 8.2 | 6 | 11.8 |
| 8 | L | 8 | 11.8 | 16 | 16.2 | 25 | M18X1.5 | 12 | 12.2 | 10 | 15.8 |
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