Standard: GB /T 9160.2
Available sizes: Tr220 to Tr340 (7 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| Tr220 | HM 48 | 34 | 20 | 4 | 270 | MS 44 | 300 | 10 |
| Tr240 | HM 56 | 38 | 24 | 4 | 320 | MS 52 | 350 | 12 |
| Tr260 | HM 64 | 42 | 24 | 5 |
| 360 |
| MS 64 |
| 400 |
| 12 |
| Tr280 | HM 72 | 58 | 28 | 5 | 420 | MS 68 | 460 | 15 |
| Tr300 | HM 80 | 62 | 32 | 5 | 460 | MS 80 | 520 | 18 |
| Tr320 | HM 88 | 70 | 36 | 5 | 510 | MS 88 | 560 | 20 |
| Tr340 | HM 96 | 75 | 36 | 5 | 560 | MS 96 | 620 | 20 |
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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