Standard: JB /T 7934 - 1999
Available sizes: 100 to 150 (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 100 | 155 | 66 | 93 | 65 | M12×60 | 54 | 75 | 191 | 10.5 | 5 | 8 |
| 110 | 180 | 78 | 100 | 72 | M12×70 | 63 | 84 | 287 |
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.
| 17.8 |
| 6 |
| 12 |
| 120 | 200 | 66 | 88 | 72 | M12×70 | 63 | 84 | 287 | 21.6 | 6 | 12 |
| 130 | 225 | 76 | 101 | 72 | M12×70 | 63 | 84 | 383 | 32.6 | 6 | 16 |
| 140 | 250 | 80 | 106 | 81 | M14×75 | 69 | 94 | 493 | 46.8 | 6 | 15 |
| 150 | 260 | 77 | 100 | 81 | M14×75 | 69 | 94 | 526 | 52.8 | 6 | 16 |
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