Standard: DIN 7337
Available sizes: Φ3 to Φ4.8 (4 sizes)
| Standard Body | Standard Number |
|---|---|
| GB | GB /T 12617.1 |
| DIN | DIN EN ISO 15978 |
| ISO | ISO 15978 |
| Size | P | k_max | k_min | s_max | s_min | k_nominal |
|---|---|---|---|---|---|---|
| Φ3 | 3.28 | 0.9 | 27 | 3.1 | 6 | 5.6 |
| Φ3.2 | 4.88 | 1.2 | 27 | 4.65 | 9 | 8.5 |
| Φ4 | 6.08 | 1.5 | 27 | 5.85 | 11 | 10.3 |
| Φ4.8 | 6.48 | 1.6 | 27 | 6.25 |
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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