Dome Head Square Neck Bolt
Dome head square neck bolt, also known as a carriage bolt. It is a type of bolt characterized by its rounded, dome-shaped head and a square neck just beneath the head. The square neck GNEE manufactured is designed to prevent the bolt from turning when tightening a nut.
Dome Head Square Neck Bolt Specification
|
Name |
Type |
Grade |
Material |
Mechanical Properties |
Surface |
|
Dome Head Square Neck Bolt |
Round head square neck bolt |
4.6 |
Q235 |
Tensile strength: ≥400Mpa Yield strength: ≥240Mpa Elongation: ≥22% Cold bending: 90 degrees without crack |
Plain (oiled), Oxide black, Zinc, HDG, wax, bitumen, Dacromet, Sherardizing |
|
Carriage bolt |
5.6 |
35# |
Tensile strength: ≥500Mpa Yield strength: ≥300Mpa Elongation: ≥20% Cold bending: 90 degrees without crack |
||
|
Or the type by customers' drawings |
8.8 |
45# |
Tensile strength: ≥800Mpa Yield strength: ≥640Mpa Elongation: ≥12% Cold bending: 90 degrees without crack |
||
|
10.9 |
40Cr |
Tensile strength: ≥1000Mpa Yield strength: ≥900Mpa Elongation: ≥9% Cold bending: 90 degrees without crack |
|
GNEE Dome Head Square Neck Bolt Workshop
GNEE, as a professional rail bolt manufacturer, offering top-quality railway products for the railway application. Our expertise spans from precise material selection to the final finishing touches, ensuring each rail bolt meets the highest international standards.
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