Standard: JB /T 7934 - 1999
Available sizes: 25 to 35 (3 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 25 | 22 | 17 | 9 | 20 | 17 | 65 | 42.5 | 24 | M6×18 | 27.5 | 0.27 |
| 30 | 32 | 17 | 15 | 20 | 17 | 78 | 52.5 | 37 |
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.
| M6×18 |
| 27.5 |
| 0.59 |
| 35 | 35 | 41 | 12 | 24 | 20 | 92 | 60 | 55 | M8×22 | 33.5 | 0.96 |
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