Standard: DIN 971
Available sizes: M10 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 | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| M10 | 1.5 | 21 | 20.67 | / | 14.1 |
| 29 |
| 13.4 |
| 23.36 |
| M12 | 1.5 | 27 | 26.16 | 2 | 17.6 | 58 | 16.9 | 29.56 |
| M14 | 1.5 | 34 | 33 | 2 | 21.8 | 117 | 20.5 | 37.29 |
| M16 | 2 | 41 | 40 | / | 26.7 | 200 | 25.4 | 45.2 |
| M18 | 2 | 50 | 49 | / | 32.5 | 380 | 30.9 | 55.37 |
| M20 | 3 | 60 | 58.8 | / | 37.5 | 610 | 35.9 | 66.44 |
| M8 | 1 | 16 | 15.73 | 1.25 | 9.3 | 11.7 | 8.94 | 17.77 |
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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