Standard: TB /T 826 - 1991
Available sizes: 10 to 8 (5 sizes)
| Size | P | k_max | s_max | s_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|
| 10 | G3/4 | 47.3 | 9 | 41 | 39.4 | 0.044 |
| 15 | G11/4 | — | 12 | 55 | 53.1 | 0.099 |
| 20 | G2 | — | 14 | 75 | 73.1 | 0.198 |
| 25 | G21/2 | — | 16 | 95 | 92.8 | 0.395 |
| 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.
| G3/8 |
| 31.2 |
| 8 |
| 27 |
| 25.7 |
| 0.02 |
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