Standard: ANSI B 18.13
Available sizes: M2.5 to M4 (4 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M2.5 | 0.5 | 1 | 1.6 | 5.73 | 5.49 | 2.84 | 2.69 | 5.3 | 1.8 | 1.02 | 5.6 |
| M3 | 0.7 | 1.5 | 2.2 | 7 | 6.74 | 3.76 | 3.6 |
| 7.6 |
| 2.4 |
| 1.19 |
| 8 |
| M3.5 | 1 | 1.9 | 3.3 | 11.3 | 11.02 | 5.62 | 5.44 | 11.5 | 3.6 | 1.96 | 12 |
| M4 | 1.25 | 2.3 | 4.5 | 14.29 | 13.96 | 7.36 | 5.75 | 15.5 | 4.8 | 2.46 | 16 |
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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