Standard: GB /T 3733
Available sizes: (14) to 8 (6 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| (14) | L | 17.5 | 25 | 43 | M36*2 | M33*2 | 42.7 | 41 | 23 | 43.3 |
| 10 | L | 13.5 | 20.5 | 32.5 | M22*1.5 | M18*1.5 | 32.2 | 24 | 11 |
| 32.8 |
| 12 | L | 14.5 | 22 | 36 | M26*1.5 | M22*1.5 | 35.7 | 27 | 14 | 36.3 |
| 15 | L | 17.5 | 28 | 48 | M45*2 | M42*2 | 47.7 | 50 | 30 | 48.3 |
| 6 | L | 10 | 17 | 29 | M14*1.5 | M12*1.5 | 28.7 | 17 | 6 | 29.3 |
| 8 | L | 12.5 | 19.5 | 31.5 | M18*1.5 | M16*1.5 | 31.2 | 22 | 9 | 31.8 |
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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