Standard: JB /T 7919.3 - 1999
Available sizes: M120 to M180 (7 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M120 | KML26 | / | MBL26 | 155 | 21 | 2 | 130 | 5 | 145 | 145 | 12 |
| M130 | KML30 | / | MBL30 | 180 | 24 | 2 | 150 | 6 |
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.
| 168 |
| 170 |
| 14 |
| M140 | KML34 | / | MBL34 | 200 | 26 | 3 | 170 | 7 | 186 | 190 | 16 |
| M150 | KML38 | / | MBL38 | 220 | 28 | 3 | 190 | 8 | 204 | 210 | 18 |
| M160 | HML41 | / | / | 250 | 30 | 4 | 205 | 8 | 234 | 232 | 18 |
| M170 | HML44 | MSL44 | / | 260 | 30 | 4 | 220 | 9 | 242 | 242 | 20 |
| M180 | HML47 | / | / | 280 | 34 | 4 | 235 | 9 | 262 | 262 | 20 |
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