American cylindrical head tapping screws
Categories: Self-tapping screws
This product is a kind of American-made screw, also called cylindrical head quick-thread self-tapping screw. It is a kind of quick installation fastener product made of carbon steel and passivated by galvanizing on the surface. The environmentally friendly black zinc used on the surface can greatly enhance the corrosion resistance of the screw
roduct Introduction
American cylinder head tapping screw is also called cylinder head quick tapping screw. It is a kind of fast installation American standard fastener products made of carbon steel and passivated on the surface. The environmentally friendly black zinc used on the surface can greatly enhance the corrosion resistance of the screw, and the rounded cylindrical head will not scratch the hands, and it is very convenient to screw in.
Product parameter
Specification: 2.2-14
Length: 3-180mm
Material: carbon steel
head type: cylindrical head
Thread type: self-tapping
Groove: Hexagon socket
Tensile strength: 450Mpa
Surface hardness: ≥450HV
Core hardness: 270-390HV
Surface treatment: environmentally friendly black zinc
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