expansion bolt anchor fixed bolt expansion 3pcs 4pcs fixed anchor bolt three pieces four pieces expansion screw

The grades of expansion bolts are divided into: 45, 50, 60, 70, 80.

Material of expansion screws: Mainly divided into austenitic A1, A2, and A4

Martensite and ferritic C1, C2, C4

For thread connections that require high importance or special applications, alloy steels with superior mechanical properties such as 15Cr, 20Cr, 40Cr, 15MnVB, and 30CrMoSi can be used.

Select different expansion screws based on the actual condition of the wall. Generally, there are several options: 6×60, 6×80, 6×120, and 6×150.

6×60: Total length 60 mm, sleeve length 45 mm, diameter 8 mm, wall thickness 0.7 mm, with colored zinc coating on the surface; screw length 60 mm, diameter 6 mm, threaded part 35 mm, bottom rod head conical with 8 mm diameter, with colored zinc coating on the surface; nut octagonal in shape, outer diameter 10 mm, thickness 5 mm, with white zinc coating on the surface; gasket outer diameter 13 mm, thickness 1 mm, inner diameter 6 mm, with white zinc coating on the surface; spring piece is a ring with outer diameter 9 mm, inner diameter 6 mm, and thickness 1.6 mm.

6×80: Total length 80 mm, sleeve length 65 mm, diameter 8 mm, wall thickness 0.7 mm, with colored zinc plating on the surface; rod length, nut, gasket, and spring piece are the same as above.

6×120: Total length 120 mm, sleeve length 105 mm, diameter 8 mm, wall thickness 0.7 mm, with colored zinc plating on the surface; rod length, nut, gasket, and spring piece are the same as above.

6×150: Total length 150 mm, sleeve length 135 mm, diameter 8 mm, wall thickness 0.7 mm, with colored zinc plating on the surface; rod length, nut, gasket, and spring piece are the same as above.

Expansion bolt grades: 45, 50, 60, 70, 80

Material of expansion screw: primary austenite A1, A2, A4

Martensite and ferrites C1, C2, C4

45 steel, for important or special-purpose threaded connections, can be chosen from 15Cr, 20Cr, 40Cr, 15MnVB, 30CrMrSi, and other alloy steels with higher mechanical properties.

Select different expansion screws depending on the actual condition of the wall. Generally, there are the following types: 6×60, 6×80, 6×120, and 6×150.

6×60: The total length is 60 mm, the casing length is 45 mm, the diameter is 8 mm, the wall thickness is 0.7 mm, and the surface is coated with colored zinc. Screw length is 60 mm, diameter is 6 mm, thread length is 35 mm. The bottom rod hammer is 8 mm in conical shape, and the surface is painted with zinc plating. The nut is octagonal, with an outer diameter of 10 mm and a thickness of 5 mm. The surface is covered with white zinc plating. The gasket has an outer diameter of 13 mm, thickness of 1 mm, inner diameter of 6 mm, and the surface is coated with white zinc. The shrapnel is a ring with an outer diameter of 9 mm, an inner diameter of 6 mm, and a thickness of 1.6 mm.

6×80: The total length is 80 mm, the casing length is 65 mm, the diameter is 8 mm, the wall thickness is 0.7 mm, and the surface is coated with colored zinc; Screw length, nut, gasket, shrapnel as described above.

6×120: The total length is 120 mm, the casing length is 105 mm, the diameter is 8 mm, the wall thickness is 0.7 mm, and the surface is coated with colored zinc; Screw length, nut, gasket, shrapnel as described above.

6×150: The total length is 150 mm, the casing length is 135 mm, the diameter is 8 mm, the wall thickness is 0.7 mm, and the surface is coated with colored zinc; Screw length, nut, gasket, shrapnel as described above.