Hardware & Tools
Structural Steel Bolt
Description
This product is a high-strength bolt connection pair for steel structures, conforming to GB/T1228-1231 standard, including bolt, nut, and washer. Suitable for friction-type connections in long-span bridges, high-rise buildings, etc., performance grades 10.9S and 8.8S, with guaranteed torque coefficient.
Specifications
| Pitch | 1.75, 2, 2.5, 2.5, 3, 3, 3.5 |
| Hardness | 33-39 HRC (10.9S), 24-31 HRC (8.8S) |
| Material | 20MnTiB (M12-M24), 35VB (M27-M30) |
| Elongation | ≥10% (10.9S), ≥12% (8.8S) |
| Shrinkage Rate | ≥42% (10.9S), ≥45% (8.8S) |
| Tensile Strength | 1040-1240 MPa (10.9S), 830-1030 MPa (8.8S) |
| Performance Grade | 10.9S, 8.8S |
| Thread Specification | M12, M16, M20, M22, M24, M27, M30 |
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