DIN6921 Hex Flange Bolts High Quality

Fastener is a kind of mechanical parts used for fastening connection and widely used.it is characterized by a wide variety of specifications,performance and use of different, and standardization,generalization is also very high,so the existing national standard of a class of Fasteners known as standard Fasteners. Flange Bolts is a form of threaded Fastener with an external male thread.Serration  with hot dip galvanized finish treatment .The Flange Bolts is an integral Bolt consisting of a hex head and a flange (the gasket under the hex and the hex fixed as one) and a  screw (the cylinder with external thread). It shall be matched with a Nut for fastening the parts connected with two through holes. Material of Screw Bolt Nut: steel,steel 45#.  Size : M6-M36 or as customer request. Finish treatment : hot dip galvanized ,micron 40-50. Surface finishing:plain,Black Phosphated,White/Yellow/Black Zinc plated,HDG,Dacromen. Standard of…

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