Standard: DIN 7500
Available sizes: (M3.5) to M4 (5 sizes)
| Standard Body | Standard Number |
|---|---|
| DIN | DIN 7500CE |
| UNI | UNI 8112 |
| Size | P | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| (M3.5) | 1.25 | 6.15 | 5.85 | 34 | 16.0 | 9 | 8.8 | 15.57 |
| 4 |
| M2 | 0.45 | 2.12 | 1.88 | 18 | 5.0 | 2.7 | 2.6 | 4.7 | 1 |
| M2.5 | 0.6 | 2.82 | 2.58 | 20 | 7.0 | 4.2 | 4 | 6.64 | 2 |
| M3 | 0.8 | 3.95 | 3.65 | 25 | 10.0 | 5.3 | 5 | 9.64 | 2 |
| M4 | 1.5 | 7.68 | 7.32 | 40 | 20.0 | 10.2 | 9.9 | 19.48 | 4 |
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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