Standard: IS 3757 - 1985
Available sizes: (M22) to M24 (4 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (M22) | 3.5 | 18.7 | 55.37 | 0.4 | 34.24 | 49 | 56 | 29.16 | 46.5 | 0.8 | 30.84 |
| M16 | 2.5 | 12.5 | 37.29 | 0.4 | 23.24 | 36 | 43 | 19.16 | 31.4 | 0.8 | 20.84 |
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.
| M20 | 3 | 15 | 45.2 | 0.4 | 27.64 | 41 | 48 | 23.16 | 38 | 0.8 | 24.84 |
| M24 | 4 | 22.5 | 66.44 | 0.4 | 41 | 56 | 63 | 35 | 55.9 | 0.8 | 37 |
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