Standard: JB /T 7553
Available sizes: YMZ1 to YMZ7 (7 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| YMZ1 | M110×6 | 110 | 10 | Tr110×4 | 225 | 1100 | 27 | 190 | 83 |
| YMZ2 | M125×6 | 130 | 10 | Tr125×6 | 260 | 1450 | 41 | 220 | 81 |
| YMZ3 | M140×6 | 140 | 10 | Tr140×6 | 295 |
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.
| 1840 |
| 57 |
| 250 |
| 79 |
| YMZ4 | M160×6 | 160 | 10 | Tr160×6 | 330 | 2460 | 82 | 280 | 84 |
| YMZ5 | M180×6 | 180 | 10 | Tr180×8 | 378 | 3100 | 119 | 320 | 83 |
| YMZ6 | M200×6 | 200 | 10 | Tr200×8 | 415 | 3865 | 162 | 350 | 86 |
| YMZ7 | M210×6 | 210 | 10 | Tr210×8 | 438 | 4275 | 191 | 370 | 83 |
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