Standard: GB /T 9128 - 2003
Available sizes: R11 to R18 (8 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| R11 | 39.69 | / | 5.23 | / | 7.94 | 14.29 | 15 | 15 | 12.7 | / |
| R12 | 44.45 | / | 5.23 | / | 7.94 | 14.29 | 20 | 20 | 12.7 |
| / |
| R13 | 50.8 | 20 | 5.23 | / | 7.94 | 14.29 | 25 | 25 | 12.7 | 25 |
| R14 | 60.33 | 25 | 5.23 | / | 7.94 | 14.29 | 32 | 32 | 12.7 | 32 |
| R15 | 68.26 | / | 5.23 | / | 7.94 | 14.29 | 40 | 40 | 12.7 | 40 |
| R16 | 82.55 | / | 5.23 | 50 | 7.94 | 14.29 | / | / | 12.7 | / |
| R17 | 95.25 | / | 7.75 | / | 11.11 | 17.46 | 50 | 50 | 15.88 | / |
| R18 | 101.6 | 50 | 7.75 | / | 11.11 | 17.46 | / | / | 15.88 | 65 |
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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