Standard: DIN 7991 - 1986
Available sizes: M10 to M8 (7 sizes)
| Standard Body | Standard Number |
|---|---|
| GB | GB /T 70.3 |
| DIN | DIN EN ISO 10642 |
| ISO | ISO 10642 |
| UNI | UNI 5933 |
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M10 | 2.5 |
| 13.1 |
| 16 |
| 69 |
| 36 |
| 60° |
| 50 |
| 22 |
| 21.67 |
| 56 |
| 35.38 |
| M12 | 3 | 14 | 16 | 73 | 39 | 60° | 54 | 24 | 23.67 | 60 | 38.38 |
| M3 | 0.7 | 2.3 | 2.87 | / | 8 | 90° | 14 | 4 | 3.82 | / | 7.64 |
| M4 | 1 | 3.3 | 4.58 | / | 12 | 90° | 18 | 6 | 5.82 | 24 | 11.57 |
| M5 | 1.5 | 5.5 | 6.86 | 45 | 20 | 90° | 26 | 10 | 9.78 | 32 | 19.48 |
| M6 | 2 | 7 | 11.43 | 53 | 27 | 90° | 34 | 14 | 13.73 | 40 | 26.48 |
| M8 | 2.5 | 8 | 13.72 | 61 | 33 | 90° | 42 | 18 | 17.73 | 48 | 32.38 |
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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