Standard: HG /T 20634 - 2009
Available sizes: M14 to M27 (5 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M14 | 2 | 26.16 | 27 | 24.1 | 29.3 | / | 17.3 | 15.7 | 12.5 | 16 | 16.4 |
| M16 | 3 | 40 | 41 | 37.5 | 44.8 | / | 25.9 | 23.1 |
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.
| 18.5 |
| 24 |
| 24.4 |
| M20 | 3.5 | 49 | 50 | 46.5 | 54.88 | / | 32.4 | 28.8 | 23.1 | 30 | 30.4 |
| M24 | / | 58.8 | 60 | 55.8 | 65.86 | 3 | 38.9 | 34.9 | 27.9 | 36 | 36.5 |
| M27 | / | 63.1 | 65 | 60.1 | 70.67 | 3 | 45.4 | 40.9 | 32.2 | 42 | 42.5 |
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