Standard: TB /T 3019 - 2001
Available sizes: M14 to M20 (4 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M14 | 2.5 | 310 | 218 | 24 | 23.67 | 16 | 9 | 113 | 159 | 0.42 | 26.75 |
| M16 | 2.5 | 608 | 427 | 30 | 29.16 | 18 | 10.2 | 220 |
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.
| 310 |
| 0.5 |
| 32.95 |
| M18 | 3 | 1046 | 736 | 36 | 35 | 21.5 | 12.6 | 379 | 535 | 0.6 | 39.55 |
| M20 | 3.5 | 2108 | 1480 | 46 | 45 | 25 | 15 | 762 | 1076 | 0.7 | 50.85 |
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