What is the difference between aluminum bolts and aluminum studs?

The bolt is the screw / screw we often talk about orally. Although it is a small one, it is really useful. It is required for almost every frame connection. Whether it is made of wood, steel or aluminum alloy profiles (aluminum profiles), bolts are basically used as long as the connection method is not welding.

1、 First, the most obvious difference is the appearance

  1. Bolts usually refer to those with heads and large points, such as outer hexagon bolts;
  2. Screws are usually set with small points, such as hexagon socket screws, pan head / flat head / large flat head / round head machine screws, etc;
  3. The studs shall be headless and shall not be rotated with tools.
  4. Common point: all belong to threaded fasteners.

2、 Difference in use

Bolt: mechanical part, cylindrical threaded fastener with nut. It is a kind of fastener composed of head and screw (cylinder with external thread), which needs to be matched with nut to fasten and connect two parts with through holes. This type of connection is called bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a removable connection.

Classification purpose

  1. Bm=1d double head studs are generally used for the connection between two steel connected parts; Bm=1.25d and bm=1.5d double head studs are generally used for the connection between cast iron connected parts and steel connected parts; Bm=2d double head studs are generally used for the connection between aluminum alloy connected parts and steel connected parts. The former one is provided with an internal thread hole, and the latter one is provided with a through hole.
  2. Threads at both ends of equal length double head studs shall be matched with nuts and washers for two connected parts with through holes.

One end of the welding stud is welded on the surface of the connected piece, and the other end (threaded end) passes through the connected piece with a through hole, then the washer is put on, and the nut is screwed on, so that the two connected pieces are connected as a whole.

Stud: it is a kind of fastener without head and only with external threads at both ends. When connecting, one end must be screwed into the part with internal thread hole, and the other end must pass through the part with through hole, and then screw on the nut to firmly connect the two parts into a whole. This type of connection is called stud connection, which is also a removable connection. It is mainly used when one of the connected parts has a large thickness, requires compact structure, or is not suitable for bolt connection due to frequent disassembly.

3、 Aluminum stud specification

  1. Double head stud bm=1dgb897-88;
  2. Double head stud bm=1.25dgb898-88;
  3. Double head stud bm=1.5dgb899-88;
  4. Double end stud bm=2dgb900-88;
  5. Equal length double head stud grade B gb901-88;
  6. Welding studs for manual welding gb902.1-89;
  7. Welding studs for power arc welding gb902.2-89;
  8. Welding studs for energy storage welding gb902.3-89;
  9. Equal length double head studs grade C gb953-88;
  10. Screw gb/t15389-94.

4、 Use of studs

  1. Bm=1d double head studs are generally used for the connection between two steel connected parts; Bm=1.25d and bm=1.5d double head studs are generally used for the connection between cast iron connected parts and steel connected parts; Bm=2d double head studs are generally used for the connection between aluminum alloy connected parts and steel connected parts. The former one is provided with an internal thread hole, and the latter one is provided with a through hole.
  2. Threads at both ends of equal length double head studs shall be matched with nuts and washers for two connected parts with through holes. One end of the welding stud is welded on the surface of the connected piece, and the other end (threaded end) passes through the connected piece with a through hole, then the washer is put on, and the nut is screwed on, so that the two connected pieces are connected as a whole.

What are the specifications of studs and what are their uses? Report readers the answer is here

  1. One end of the welding stud is welded on the surface of the connected piece, and the other end (threaded end) passes through the connected piece with a through hole, then the washer is put on, and the nut is screwed on, so that the two connected pieces are connected as a whole.

Bolts for aluminum profiles are mainly used to connect aluminum profiles and plates, or aluminum profiles and aluminum profiles, aluminum profiles and related accessories such as corner pieces. Generally, the bolts are made of carbon steel, but sometimes they are used in special environments or customers require customized bolts made of aluminum alloy or stainless steel. The difference is the hardness and the surface. Generally, the bolt hardness of carbon steel is not as good as that of stainless steel and aluminum alloy, but the price is much cheaper than that of stainless steel and aluminum alloy. In addition, some alloy bolts with higher hardness and strength are used for earthquake resistance.

What are the bolt materials for aluminum profiles?

The bolt materials for aluminum profiles are generally these, but there are many forms of bolts, such as hexagon socket bolts, cylindrical head bolts, half round head bolts, T-bolts and other forms of bolts. Nanjing Meicheng aluminum not only provides wholesale of aluminum profiles, but also provides accessories for various types of aluminum profiles, including bolts, nuts, angle pieces, etc.

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