Q:Our company to purchase a number of fasteners to see when the CAD drawings in the technical requirements I do not know the specific to write those content

Fasteners are generally standard parts, have national standards (except for special requirements)

Q:What is the fastener and others?

Department of mechanical engineering (a subject); mechanical parts (two subjects); fasteners (three subjects)

Q:Bolts and other connection fasteners some points A B C grade what it means

Grade is not the same, the tolerance range is not the same, A-level tolerance of the smallest, C-class tolerance of the largest

Q:High-strength screw standard parts of the quality of what data

The other can be based on the corresponding use of the environment, to decide whether to accept or not accepted.

Q:what parts do Fasteners include

Bolts: A fastener consisting of a head and a screw (with an external thread), which is fitted with a nut for fastening the connection of two parts with through holes. This type of connection is bolted. If the nut is screwed off from the bolt, it is possible to separate the two parts, so the bolt connection is a detachable connection.

Q:Does the fastener include screws?

Fastener fasteners are also known as standard parts on the market and are a generic term for a class of mechanical parts that are used when two or more parts (or components) are tightly connected as a unit. It is characterized by a wide variety of specifications, performance purposes vary, and standardization, serialization, the degree of generalization is very high. Fasteners are the most widely used mechanical base pieces and are in great demand.

Q:Fasteners are used in what areas?

In the international arena, fasteners according to the use of the field can be divided into two categories, one is the general use of fasteners, the other is aerospace fasteners.

Q:Are there categories of fasteners classified by material?

Low carbon steel Q235, low carbon alloy steel Q345, 10B21 medium carbon steel 35K 45K, high carbon alloy steel 40CR 435crmo, stainless steel 303 304 316. Stainless steel 201. etc., the number of materials, but generally determine the amount of carbon fasteners, etc. To what level. Of course, like 10B21 this low-carbon alloy steel can reach 8.8 level

Q:The main meaning is that the design to make some specific requirements to achieve consistency.

Referred to the selection must be selected in the national standard parts, otherwise the changeability does not exist. Speaking of norms nothing less than the following: function according to national standards (strength, rust, shape ....);

Q:What fasteners are manufacturers in China?

(3) Ningbo Jinding Fasteners Co., Ltd. (4) Jin billion Industrial Co., Ltd. (5) Zhejiang Zhapu Industrial Co., Ltd. (3) Changshu Standard Parts Factory; (2) Shanghai Standard Five High Strength Fasteners Co.