Standard: DIN 6888 - 2022
Available sizes: 1 to 3 (5 sizes)
| Standard Body | Standard Number |
|---|---|
| DIN | DIN 6888 |
| ISO | ISO 3912 |
| UNI | UNI 6606 |
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 1.5 | 0.153 | 7 | 6.9 | 1.475 |
| 2.6 |
| ＞8~10 |
| 6.76 |
| 2.5 |
| ＞4~6 |
| 1.5 | 2 | 0.414 | 10 | 9.9 | 1.975 | 3.7 | ＞10~12 | 9.66 | 3.58 | ＞6~8 |
| 2 | 3 | 1.8 | 16 | 15.9 | 2.975 | 6.5 | ＞12~17 | 15.72 | 6.35 | / |
| 2.5 | 4 | 2.4 | 16 | 15.9 | 3.97 | 6.5 | ＞17~22 | 15.72 | 6.35 | ＞10~12 |
| 3 | 5 | 3.01 | 16 | 15.9 | 4.97 | 6.5 | ＞22~30 | 15.72 | 6.35 | ＞12~17 |
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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