Standard: ISO 10644 - 1998
Available sizes: (M3.5) to M4 (5 sizes)
| Standard Body | Standard Number |
|---|---|
| GB | GB /T 9074.1 |
| DIN | DIN EN ISO 10644 |
| ISO | ISO 10644 |
| Size | P | k_max | k_min | s_max | s_min | k_nominal |
|---|---|---|---|---|---|---|
| (M3.5) | 1.6 | 2 | 24 | 15 | 1.6 | 16 |
| M2 | 0.6 | 0.6 |
| 8 |
| 5 |
| 0.6 |
| 6 |
| M2.5 | 0.8 | 0.8 | 11 | 7 | 0.8 | 8 |
| M3 | 1 | 1 | 15 | 9 | 1 | 10 |
| M4 | 2 | 3 | 37 | 20 | 2.5 | 24 |
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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