Introduction of hex flange nut

The hexagon flange nut mainly includes the nut body. One end of the nut body is fixed with a flange face, and the other end of the nut body is fixed with a cap. Because the cap is set on the nut body, the hexagon flange nut has better sealing performance when it is used, which can effectively prevent rain, moisture, dust and other harmful substances from entering the nut body, and prevent the nut body from rusting, Thus, the service life of hexagon flange nut can be greatly extended.
Hexagon flange nut material: A3 low carbon steel 35K high speed steel wire 45 × 40Cr 35CrMoA;
Hardness grade of hexagon flange nut: Grade 4, grade 5, grade 6, Grade 8, grade 10, grade 12;
Hexagon flange nut surface treatment: generally divided into color zinc plating and white zinc plating, and generally cold

galvanizing;
Main specifications of hexagon flange nut: M5 M6 M8 M10 M12 M16 M20 (flange nuts with specifications above M20 and M14 M18 are not commonly used);
Hexagon flange nut thread specification: refer to national standard nut thread;
Hexagon flange nut National Standard Code: gb6177-2000;
Service characteristics of hex flange nut:
1. Piping: use a pipe cutter or grinding wheel cutter (the cutting blade shall be special) to cut stainless steel pipe vertically according to the required length, clean the end burr and make it round;
2. Welding: the left and right tapered flange flange plates (with grooves, specially used for embedding the flange gasket on both sides) are respectively welded with the two pipe ends to be connected by TIG welding;
3. Gasket: the left and right flange plates are lined with double flange gasket;
4. Fastening: clamp two flange plates with clamps, and then clamp the flange or fastening handle with fastening screws (hexagon socket bolts) (one end of the external thread is connected with the internal thread of the handle, and the other end is connected with fixed rivets).
Inspection difficulties of hexagon flange nut: tooth defect, hexagon opposite corner, dimension.
45 degree side image of the first site: check whether there is internal tooth;
Second station side image: detect the total height of nut and flange;
Image on the third site: detect the opposite corner of hexagon;
Image under the fourth station: check the diameter of inner hole and flange.