Made of 40Cr Steel material,black oxide finish,hex socket head,left hand reverse thread design.Fixing component, industrial and construction fasteners.To tighten a reverse threaded screw, you turn it counter clockwise.To loosen a reverse threaded screw, you turn it clockwise.Used widely in home, office and factory appliance, communication equipments, ship assembly and other machinery industry.
D**.
None
Amazing to be able to get left hand threaded screws
M**M
Chuck screws
These reverse screw threads are ideal as chuck screws when others ware out. These are stronger material.
Trustpilot
2 months ago
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