The Brief Introduction Of Fasteners

As a professional fastener supplier specializing in manufacturing a variety of high-quality tee nuts, Anji Xinchi Fastening Piece Co., Ltd, is willing to introduce some basic knowledge about fasteners to customers or interested people.

What are the uses of fasteners?

Fasteners are a kind of mechanical parts which are used for fastening and connecting. Fastener applications cover many fields and can be widely seen in many industries, including machinery, equipment, vehicles, ships, railways, Bridges, buildings, structures, tools, instruments, chemicals, instruments, and supplies, so it can be said that fasteners are the most widely used mechanical basic parts.

What are the characteristics of fasteners?

Fasteners are characterized by a variety of specifications, different performance purposes, and a high degree of standardization, serialization, and generalization. Therefore, some types of fasteners with existing national standards are also called standard fasteners, or simply standard parts. We, as a reliable fastener supplier, can provide different kinds of high-quality fasteners, such as tee nuts, screws, bolts, washers,  sleeves, and so on.

How to correctly describe fasteners?

Description Fasteners need to be marked with the following parameters: product name (standard), specification, material, strength grade, and surface treatment. For example DIN912, M4-0.7×8, SCM435, 12.9 grade, black.

1, Product name (standard): Note: For screws without standard, which belong to non-standard parts, drawings need to be provided.

For example, DIN912, the Chinese name: for hexagon socket head screw, is the name of the product.

However, the most accurate way, or need to address the standard, because GB70 is also such a product name; But there are many areas where the two standards are different in size.

The most influential standards in the world are the German standard (DIN), the international standard (ISO), the Chinese national standard (GB), the American standard (ANSI), Japanese standard (JIS).

2, Specifications: Generally speaking, the screw name is the tooth pattern name diameter * screw length.

Tooth lines called the diameter, metric commonly used are M2, M3, M4, M5, M6, M8, M10, M12, etc.;

American commonly used are: 4 #, 6 # 40-32, 8 #, 10 # 32-24, 1/4-20, 5/16 to 18, 3/8-16, 1/2-13, etc.

The length of the screw refers to the effective length of the embedded object. For example, countersunk head screws are loaded in total length, half countersunk head screws are loaded in half head length, and cylindrical head screw length does not include the head size.

For specifications, the full name is best to add the tooth distance. For example, in M4-0.7×8, the outer diameter of the 4-finger tooth is 4mm,0.7 refers to the distance between the two tooth peaks is 0.7mm, and the effective length of the 8-finger embedded object is 8mm.

If you have any fasteners and fixing problems, please do not hesitate to contact Anji Xinchi Fastening Piece Co., Ltd, our salesmen will reply as soon as possible.