Standard: GB /T 3758 - 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 | 42.5 | 27.5 | 23.2 | 22.95 | 10 | 28 | 33 | 30 | 23 | 31 |
| 10 | L | 35 | 22 | 10.2 | 9.95 | 25 | 15 | 20 |
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.
| 17 |
| 10 |
| 18 |
| 12 | L | 37 | 23 | 13.2 | 12.95 | 16 | 18 | 24 | 20 | 13 | 21 |
| 15 | L | 49.5 | 30.5 | 29.2 | 28.95 | 10 | 35 | 42 | 37.7 | 29 | 40 |
| 6 | L | 32 | 19 | 5.2 | 4.95 | 25 | 8 | 12 | 9.8 | 5 | 11 |
| 8 | L | 33 | 20 | 8.2 | 7.95 | 25 | 12 | 16 | 14 | 8 | 15 |
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