Railway coach screws are used to to fasten timber railway sleepers with baseplate or rail chairs. Kingrail Parts supplies customized coach screws to various railway departments. Our coach screws can meet DIN, BS, GB/T, and other standards.
Specification:
Material: steel Q235, 35#, 45#; alloy steel 40Cr, 42CrMo, 35CrMo
Level: 3.6/4.6/4.8/5.6/5.8/6.8/8.8/10.9/12.9
Standard: DIN 17221, BS 970, GB/T 4357, GB/T 4358
Surface: ordinary oil coating, oxygen black, galvanized, hot dip galvanized, Dacromet coating
Name |
Railway Coach Screw |
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Type |
Ss5.-150 |
V20-135 |
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Ss8-140 |
V23-115 |
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Ss8-150 |
V23-135 |
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Ss8-160 |
V23-155 |
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Ss23-160 |
V23-215 |
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Ss25.-165 |
V26-115 |
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Ss35.-161 |
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Or the type by customers’ drawings |
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Grade |
4.6 |
5.6 |
8.8 |
10.9 |
Material |
Q235 |
35# |
45# |
40Cr |
Mechanical properties |
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 crack |
Cold bending: 90 degree without crack |
Cold bending: 90 degree without crack |
Cold bending: 90 degree without crack |
|
Surface |
plain (oiled), Oxide black, Zinc, HDG, wax, bitumen, Dacromet, Sherardizing |
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Standard refers |
ISO898-1, UIC864-1, and NF F500-50 |
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