Standard: ANSI B 18.13
Available sizes: M2.5 to M5 (5 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| M2.5 | 0.5 | 1.88 | 5.31 | 5.07 | 2.84 | 2.69 | 5.32 | 2.12 | 0.79 | 5.5 |
| M3 | 0.7 | 2.68 | 6.66 | 6.4 | 3.76 | 3.6 | 6.78 | 2.92 | 1.02 |
| 7 |
| M3.5 | 1 | 3.85 | 11.26 | 10.98 | 5.62 | 5.44 | 9.78 | 4.15 | 1.57 | 10 |
| M4 | 1.5 | 6.17 | 16.7 | 16.33 | 9.41 | 9.17 | 15.73 | 6.63 | 2.39 | 16 |
| M5 | 1.75 | 7.24 | 20.17 | 19.76 | 11.33 | 11.08 | 17.73 | 7.76 | 3.18 | 18 |
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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