Standard: DIN 439
Available sizes: (M1.8) to M4 (7 sizes)
| Standard Body | Standard Number |
|---|---|
| EN | EN 24035 |
| GB | GB /T 6172.1 |
| IS | IS 1364(-4) |
| NF | NF E 25-405-1 |
| DIN | DIN EN ISO 4035 |
| ISO | ISO 4035 |
| UNI | UNI 5589 |
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max |
|---|
| ds_min |
|---|
| k_nominal |
|---|
| ds_nominal |
|---|
| (M1.8) | 0.45 | 1.08 | 1.35 | 2.5 | 2.9 | / | / | 5.45 | 1.6 | / | 4.1 |
| (M3.5) | 1.75 | 4.56 | 5.7 | 12 | 13 | 1.5 | 1.25 | 21.1 | 6 | / | 17.4 |
| M1.6 | 0.35 | 0.68 | 0.85 | 1.8 | 2.06 | / | / | 3.82 | 1.1 | / | 2.7 |
| M2 | 0.6 | 1.4 | 1.75 | 3.5 | 4 | / | / | 6.58 | 2 | / | 5.1 |
| M2.5 | 0.8 | 1.96 | 2.45 | 5 | 5.75 | / | / | 8.79 | 2.7 | / | 6.9 |
| M3 | 1.25 | 2.96 | 3.7 | 8 | 8.75 | 1 | / | 14.38 | 4 | / | 11.6 |
| M4 | 2 | 5.94 | 7.42 | 16 | 17.3 | 1.5 | / | 26.75 | 8 | / | 22.5 |
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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