Standard: ISO 4032 - 2023
Available sizes: (M3.5) to M6 (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 |
|---|
| (M3.5) | 1.25 | 13 | 5.15 | 8 | 11.63 | 0.6 | 0.15 | 6.8 | 6.44 | 8.75 | 14.38 |
| M1.6 | 0.4 | 4 | 1.08 | 2 | 3.34 | 0.25 | 0.1 | 1.6 | 1.35 | 2.3 | 4.32 |
| M2 | 0.5 | 5.5 | 1.72 | 3 | 4.84 | 0.4 | 0.15 | 2.4 | 2.15 | 3.45 | 6.01 |
| M2.5 | 0.7 | 7 | 2.32 | 4 | 6.2 | 0.4 | 0.15 | 3.2 | 2.9 | 4.6 | 7.66 |
| M3 | 1 | 10 | 3.92 | 6 | 8.88 | 0.5 | 0.15 | 5.2 | 4.9 | 6.75 | 11.05 |
| M4 | 1.75 | 18 | 8.3 | 12 | 16.63 | 0.6 | 0.15 | 10.8 | 10.37 | 12.96 | 20.03 |
| M5 | 2 | 24 | 11.28 | 16 | 22.49 | 0.8 | 0.2 | 14.8 | 14.1 | 17.28 | 26.75 |
| M6 | 2.5 | 27 | 12.08 | 18 | 24.85 | 0.8 | 0.2 | 15.8 | 15.1 | 19.44 | 29.56 |
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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