Standard: BS 275
Available sizes: 1/2 to 9/16 (6 sizes)
| Size | P | s_max | s_min |
|---|---|---|---|
| 1/2 | 14.288 | 27/32 | 9/32 |
| 11/16 | 23.813 | 1 13/32 | 15/32 |
| 13/16 | 28.575 | 1 11/16 | 9/16 |
| 3/4 | 26.988 | 1 19/32 | 17/32 |
| 5/8 | 20.638 | 1 7/32 | 13/32 |
| 9/16 | 17.463 | 1 1/32 | 11/32 |
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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