Standard: GB /T 3754 - 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 | 36 | 41 | 38 | 47 | 10 | M36×2 | 30.5 | 10 | 24 | 41.5 |
| 10 | L | 19 | 27 | 28 | 36 | 25 | M22×1.5 |
| 21 |
| 9 |
| 12 |
| 32.5 |
| 12 | L | 24 | 32 | 31 | 40 | 16 | M26×1.5 | 23.5 | 9 | 15 | 35.5 |
| 15 | L | 41 | 50 | 45 | 56 | 10 | M45×2 | 34.5 | 12 | 30 | 51 |
| 6 | L | 12 | 17 | 21 | 29 | 25 | M14×1.5 | 14 | 7 | 6 | 27.5 |
| 8 | L | 17 | 22 | 24 | 32 | 25 | M18×1.5 | 17 | 8 | 10 | 29.5 |
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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