Standard: ISO 4032 - 2012
Available sizes: M1.6 to M8 (8 sizes)
| Standard Body | Standard Number |
|---|---|
| GB | GB /T 6170 |
| IS | IS 1364(-3) |
| DIN | DIN EN ISO 4032 |
| ISO | ISO 4032 |
| UNI | UNI 5588 |
| ANSI | ASME/ANSI B 18.2.4.1M |
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal |
|---|
| ds_nominal |
|---|
| M1.6 | 0.4 | 4 | 1.1 | 2.0 | 3.1 | 0.2 | 0.1 | 1.6 | 1.35 | 2.3 | 4.32 |
| M2 | 0.5 | 5.5 | 1.7 | 3.0 | 4.6 | 0.4 | 0.15 | 2.4 | 2.15 | 3.45 | 6.01 |
| M2.5 | 0.8 | 8 | 3.5 | 5.0 | 6.9 | 0.5 | 0.15 | 4.7 | 4.4 | 5.75 | 8.79 |
| M3 | 1.25 | 13 | 5.2 | 8.0 | 11.6 | 0.6 | 0.15 | 6.8 | 6.44 | 8.75 | 14.38 |
| M4 | 1.75 | 18 | 8.3 | 12.0 | 16.6 | 0.6 | 0.15 | 10.8 | 10.37 | 13 | 20.03 |
| M5 | 2.5 | 30 | 13.5 | 20.0 | 27.7 | 0.8 | 0.2 | 18 | 16.9 | 21.6 | 32.95 |
| M6 | 3.5 | 46 | 19.4 | 30.0 | 42.8 | 0.8 | 0.2 | 25.6 | 24.3 | 32.4 | 50.85 |
| M8 | 4 | 55 | 23.5 | 36.0 | 51.1 | 0.8 | 0.2 | 31 | 29.4 | 38.9 | 60.79 |
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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