Standard: JB /T 6296.7 - 1992
Available sizes: 1 to 3/8 (7 sizes)
| Size | P | k_max | s_max | s_min | k_nominal |
|---|---|---|---|---|---|
| 1 | 50 | 200.17 | 49.61 | 25 | 32 |
| 1-1/4 | 55 | 311.3 | 54.54 | 25 | 32 |
| 1/2 | 30 | 37.55 | 29.67 | 16 | 21 |
| 1/4 | 14 | 4.88 | 13.73 | 10 | 14 |
| 1/8 | 9 | 1.55 | 8.78 | 7 | 11 |
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.
| 3/4 | 36 | 89.97 | 35.61 | 19 | 27 |
| 3/8 | 22 | 15.94 | 21.67 | 13 | 19 |
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