Standard: BS 1802
Available sizes: 1/4 to 5/32 (5 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| 1/4 | 0.755 | 0.176 | 7 | 0.839 | 0.128 | 0.154 | 10 | 0.112 |
| 1/8 | 0.284 | / | / | / | 0.064 | / | 16 | 0.056 |
| 3/16 | 0.610 | 0.144 | 9 | 0.658 | 0.116 |
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.
| 0.126 |
| 11 |
| 0.102 |
| 5/16 | 0.876 | 0.192 | 6 | 0.960 | 0.144 | 0.168 | 9 | 0.126 |
| 5/32 | 0.421 | 0.104 | 12 | 0.463 | 0.080 | 0.091 | 14 | 0.070 |
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