Standard: JB /T 7919.3 - 1999
Available sizes: M10 to M28 (8 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M10 | KM01 | / | MB01 | 22 | 4 | 1 | 12 | 2 | 18 | 17 | 3 |
| M12 | KM03 | / | MB03 | 28 | 5 | 1 | 17 | 2 |
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.
| 24 |
| 24 |
| 4 |
| M15 | KM22 | / | MB22 | 34 | 6 | 1 | 22 | 2 | 30 | 28 | 4 |
| M17 | KM28 | / | MB28 | 42 | 7 | 1.5 | 28 | 2 | 38 | 36 | 5 |
| M20 | KM32 | / | MB32 | 48 | 8 | 1.5 | 32 | 2 | 44 | 40 | 5 |
| M22 | KM08 | / | MB08 | 58 | 9 | 1.5 | 40 | 2.5 | 53 | 50 | 6 |
| M25 | KM10 | / | MB10 | 70 | 11 | 1.5 | 50 | 2.5 | 65 | 61 | 6 |
| M28 | KM12 | / | MB12 | 80 | 11 | 2 | 60 | 3 | 74 | 73 | 7 |
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