Standard: GB /T 16674.3 - 2023
Available sizes: M10 to M8 (4 sizes)
| Standard Body | Standard Number |
|---|---|
| GB | GB /T 16674.3 |
| ISO | ISO 4162 |
| ANSI | ASME/ANSI B 18.2.3.4M |
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M10 | 2 | 17.2 | 15.73 |
| 2.4 |
| 17.7 |
| 38 |
| 44 |
| 32.8 |
| 16 |
| 57 |
| 20.5 |
| M5 | 1 | 6.6 | 5.82 | 1.1 | 6.8 | 18 | / | 13.6 | 6 | / | 7.5 |
| M6 | 1.5 | 10.8 | 9.78 | 1.5 | 11.2 | 26 | 32 | 20.8 | 10 | / | 12.5 |
| M8 | 2 | 14.8 | 13.73 | 2.1 | 15.7 | 34 | 40 | 28.6 | 14 | / | 17.7 |
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.
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