Standard: BS 916 - 1953
Available sizes: 1/2 to 7/16 (5 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| 1/2 | 9 | 1.84 | 1/16 | 0.915 | 1.300 | 0.583 | 1.270 | 0.623 |
| 1/4 | 18 | 0.74 | 1/32 | 0.342 | 0.525 | 0.208 | 0.515 | 0.228 |
| 3/8 | 12 | 1.30 | 3/64 | 0.592 | 0.920 |
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.
| 0.375 |
| 0.900 |
| 0.405 |
| 5/16 | 14 | 1.00 | 1/32 | 0.468 | 0.710 | 0.292 | 0.695 | 0.312 |
| 7/16 | 10 | 1.70 | 3/64 | 0.790 | 1.200 | 0.500 | 1.175 | 0.530 |
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