Standard: ISO 8674 - 2023
Available sizes: (M14) to M8 (7 sizes)
| Standard Body | Standard Number |
|---|---|
| GB | GB /T 6176 |
| DIN | DIN EN ISO 8674 |
| ISO | ISO 8674 |
| UNI | UNI 5587 |
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (M14) |
| 2 |
| 16.4 |
| 20.5 |
| 23.76 |
| 22 |
| 1.5 |
| 0.8 |
| 37.29 |
| 21.8 |
| 0.2 |
| 31.35 |
| (M18) | 2 | 24.72 | 30.9 | 35.64 | 33 | / | 0.8 | 55.37 | 32.5 | 0.2 | 46.55 |
| M10 | 1.5 | 10.72 | 13.4 | 15.12 | 14 | / | 0.6 | 23.36 | 14.1 | 0.15 | 19.64 |
| M12 | 2 | 13.52 | 16.9 | 19.44 | 18 | 1.5 | 0.8 | 29.56 | 17.6 | 0.2 | 24.85 |
| M16 | 2 | 20.32 | 25.4 | 29.16 | 27 | / | 0.8 | 45.2 | 26.7 | 0.2 | 38 |
| M20 | 3 | 28.72 | 35.9 | 42.12 | 39 | / | 1 | 66.44 | 37.5 | 0.3 | 55.86 |
| M8 | 1.25 | 7.15 | 8.94 | 10.8 | 10 | 1 | 0.6 | 17.77 | 9.3 | 0.15 | 14.63 |
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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