Standard: GB /T 5357 - 1998
Available sizes: T30 to T50 (3 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| T30 | 76 | 6.56 | 6.635 | 26.42 | 25.58 | 76.6 | 75.4 | 4.87 | 6.705 | 26 | 4.57 |
| T40 | 108 | 11.107 | 11.197 | 35.5 | 34.5 | 108.7 | 107.3 | 8.01 | 11.277 | 35 | 7.65 |
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.
| T50 | 145 | 17.473 | 17.583 | 46.5 | 45.5 | 145.8 | 144.2 | 11.05 | 17.678 | 46 | 10.62 |
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