Standard: GB /T 32294
Available sizes: 10 to 8 (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 1 | 4.5 | 4.6 | 27.4 | 25.9 | 45.5 | 34.7 | 34.2 | 26.2 | 34.3 | 30.2 |
| 15 | 1-1/2 | 5.6 | 5.9 | 41.6 | 40.1 | 61.5 | 49.3 | 42.1 |
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.
| 34.1 |
| 48.9 |
| 38.1 |
| 20 | 2-1/2 | 7.1 | 7.5 | 64.2 | 61.2 | 91.7 | 74.4 | 61.7 | 52.1 | 73.9 | 56.9 |
| 25 | 3 | 8 | 8.3 | 79.4 | 76.4 | 109.2 | 90.4 | 63.5 | 53.9 | 89.9 | 58.7 |
| 6 | 1/4 | 3.2 | 3.2 | 10 | 8.5 | 21.9 | 14.5 | 22.3 | 19.1 | 14.1 | 20.7 |
| 8 | 1/2 | 3.7 | 3.7 | 16.5 | 15 | 31.3 | 22.3 | 27 | 20.6 | 21.9 | 23.8 |
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