Factory Direct Price Discount/Countersunk Screw for Plastic Pipe/Plastic Expansion Screw

Product Description

Can customize a variety of special-shaped products
Various models, please consult customer service.
Basic models are in stock and we can deliver them quickly.

Please feel free to contact us.
We'll get back to you as soon as possible.

Method of application:

Generally speaking, the expansion screw is a metal expansion screw, and the fixing of the expansion screw is to use the wedge inclination to promote the expansion to produce friction gripping force to achieve the fixed effect. One end of the screw is threaded and the other end has a taper. The outer bread is a iron sheet (some steel pipe), the iron cylinder (steel pipe) half has a number of cuts, put them together into the hole made in the wall, and then lock the nut, the nut pulls the screw outward, pulls the taper into the iron cylinder, the iron cylinder is expanded, so firmly fixed on the wall,
 

The spring pad on the expansion screw is a standard part, because its opening is staggered and elastic, so it is called the spring washer, the role of the spring washer is to use the sharp Angle of the wrong mouth to puncture the nut and the pad to prevent the nut from loosening.

The flat washer is also a standard part, and its function is to evenly distribute the pressure of the nut to the connected parts.

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

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

Martensite and ferrite C1, C2,

Its representation is as follows: A2-70,

No. 45 steel, for important or special purpose threaded connection parts, can choose 15Cr, 20Cr, 40Cr, 15MnVB, 30CrMrSi and other alloy steel with higher mechanical properties.

Choose different expansion screws according to the actual situation of the wall. There are generally the following kinds of 6×60, 6×80, 6×120, 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, the surface is coated with colored zinc; Screw length 60 mm, diameter 6 mm, part of the thread 35 mm, the bottom rod hammer 8mm conical, the surface is coated with zinc; The nut has an octagonal diameter of 10 mm, thickness of 5 mm, and the surface is coated with white zinc; Gasket outer diameter 13 mm, thickness 1mm, inner diameter 6 mm, surface plated 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: Total length 80 mm, casing length 65 mm, diameter 8mm, wall thickness 0.7 mm, the surface is coated with colored zinc; Screw length, nut, gasket, shrapnel as above.

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

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