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| Track Bolts (Fish Bolts) | ||||
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| Grade | 4.6 | 5.6 | 8.8 (Gr5) | 10.9(Gr8) |
| Material | Q235 | 35# | 45# | 40Cr |
| Mechanical Properities | Tensile strength: ≥400Mpa | Tensile strength: ≥500Mpa | Tensile strength: ≥800Mpa | Tensile strength: ≥1000Mpa |
| Yield strength: ≥240Mpa | Yield strength: ≥300Mpa | Yield strength: ≥640Mpa | Yield strength: ≥900Mpa | |
| Elongation:≥22% | Elongation:≥20% | Elongation:≥12% | Elongation:≥9% | |
| Cold bending: 90 degree without cracks | Cold bending: 90 degree without cracks | Cold bending: 90 degree without cracks | Cold bending: 90 degree without cracks | |
| Surface Treatment | Plain (oiled), Oxide black, Zinc, HDG, Wax, bitumen, Dacromet, Sherardizing | |||
| Standard Reference | UIC864-2,DIN5903-2,AS1085.4/6/7,BS64,AREMA,JIS, | |||
| The sizes we produced | ||||
| Button Head Oval Neck Track Bolt | Diamond Neck Track Bolts | |||
| Dia | Length | Dia | Length |
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| 1/2" | 1-3/4" | 7/8" | 4-1/2" | |
| 1/2" | 2" | 7/8" | 5-1/2" | |
| 1/2" | 2-1/4" | 1" | 5-1/4" | |
| 5/8" | 2-1/2" | 1" | 5-3/4" | |
| 3/4" | 3" | 3/4" | 2 | |
| 3/4" | 3-1/2" | 7/8" | 2-1/8" | |
| 3/4" | 4" | 15/16" | 2-5/16" | |
| 7/8" | 4-1/2" | 15/16" | 2-1/8" | |
| 7/8" | 5" | 1" | 2-5/16" | |
| 1" | 5" | 1" | 2-11/16" | |
| 1" | 5-1/2" | 1-1/16" | 6" | |
| 1" | 6" | 1-1/8" | 6-1/2" | |
| Customization is available ! | ||||
Track bolts are used to fasten rail ends together at a joint. The sizes of track bolts are varying with the requirements of the section of rail. The proper diameter and length of the track bolt an be determined by checking the applicable railway standard.The track bolts can be classified into several types, such as, Button head oval neck track bolt, Diamond neck track bolt, Rail bolt NF F50-008, Fish bolt, Track bolt of Russian standard and other special bolts, etc.
According to related rail standards, each joint needs to be bolted with at least two bolts in each rail tightened to approximately 400 foot-pounds of torque which develops between 25,000, and 30, 000 pounds of tension in the bolts.