Standard: IS 6649
Available sizes: (M22) to M24 (4 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| (M22) | 33 | 7.5 | 8.5 | 33.62 | 55 | 8° | 58 | 6° |
| M16 | 22 | 7.5 | 8.5 | 22.52 | 42 | 8° | 45 | 6° |
| M20 | 26 | 7.5 | 8.5 | 26.52 |
| 42 |
| 8° |
| 45 |
| 6° |
| M24 | 39 | 7.5 | 8.5 | 39.62 | 55 | 8° | 58 | 6° |
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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