圓頭花齒頸螺栓
a) A ribbed neck screw is a type of fastener designed with a special feature on its shank or neck. Instead of a smooth or threaded surface, the neck of the screw has ribbed, serrated, or knurled features. These ribs or serrations provide additional grip and resistance when the screw is driven into a material, preventing it from rotating or loosening.
Description | |
---|---|
Material | Carbon steel |
Driving recess type | Slot recess |
Head Type | Truss head |
Thread Type | Inch size |
Surface color | Zinc plating |
Thread size / diameter | 1/4 - 20 |
Length | 1/2 or 5/8 |
Field of application | Construction / Garage door |
Special feature | Ribbed neck |
: