DIN603 Round Head Square Neck Bolt

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Product Description

Product Name	DIN603 Round Head Square Neck Bolt
Material	Carbon Steel, Stainless Steel 201/ 304/ 316 or others.
Size	M4--M22
Standard Model	DIN ANSI JIS ASTM
Min Order	1000piece/ pieces

Packaging & Shipping

Packing	Inner Box + Carton Box + Pallet or Under Your Requirement
Supply capacity	10000000 piece/ pieces per month
Delivery time	5~20 days after deposit
Export market	Asia, America, Europe, Africa, markets.

Our Services

1. Reliable Supplier
2. High Quality
3. Standard Producing Technology
4. Competitive Factory Price
5. Fast Delivery

1. Reliable Supplier

2. High Quality

3. Standard Producing Technology

4. Competitive Factory Price

5. Fast Delivery

Product Picture：

DIN603 Round Head Square Neck Bolt

Q: Gasket A140 what is the material: Gasket A140 is stainless steel, used in corrosive media environment to do flat washers.Gasket introduction:A part between a connector and a nut. A flat metal ring is generally used to protect the surface of the connecting piece from the nut.Classification:The washer is divided into: -C, flat washer washer -A and grade C, grade -C large washers, washer, flat washer, flat washer, chamfered - - a grade steel structure with high strength washer, spherical washer, taper washers, square taper washers, steel I-beam, square taper washers standard type spring washers, spring washers, light heavy spring washers, lock washers internal teeth serrated lock washers, inner and outer teeth lock washers, serrated lock washers, single ear washers, ears washers, external tab washers, round nuts with washers.

Q: Specific conditions for use of spring washers: Standard for use with spring washers? Should not. Spring washer main role is to prevent loose!

Q: What is the reason why the rubber washer is small after use?: If you do not have any oil around the gasket, which may be used in the process of gasket compression deformation occurred!If there is oil to the present, it is likely that the oil things out of your rubber additives!

Q: Screws, bolts, screws, what is the difference between the three ah?: The screw is an incorrect call, non-professionals on the threaded parts collectively, in the industry without this call. In the fastener industry, in fact, screws and bolts are not a strict sense of the distinction. However, there are two ways in the industry to distinguish between screws and bolts: 1. According to the structure, the so-called twist structure, refers to the screw / bolt used to put the wrench above the place, that is, In some systems inside, the external pull the structure of the external screw rod-shaped parts are all called the bolt, on the contrary, will pull the structure called screw. This is a more obvious example is the Chinese national standard fasteners, for example, GB5782, GB5783 (a half thread, a full thread), the hexagonal bolts, The Because they are hexagonal structure, so, in the standard name, all called: bolts. 2, according to whether the product has a non-threaded bar features to distinguish. This is also a relatively wide use of a classification method, are generally so distinguish between bolts and screws. That is, if the part of the product other than the head is threaded, this part is called a screw. On the contrary, if, in addition to the thread but also has a light rod and other characteristics, called the bolt

Q: What is a self-tapping nail? Is it used? What are the characteristics of the shape? What is the difference with ordinary screws?: Compared with the common screw thread, in the same large diameter, the pitch is small and small diameter is slightly smaller, has been standardized. Self-tapping screw material can be divided into two kinds of carbon steel and stainless steel, carbon steel materials which are usually used in 1022 medium carbon steel. Usually used in doors and windows, metal. The head is the end of the end of the shape of the part of the formation of the formation of the surface.For thread forming and thread cutting self-tapping screws (self-tapping screws), the flat top buried, flat round countersunk, pan head, hexagonal and hexagonal wire Head of the most important, these five head type accounted for almost all 90% of self-tapping screws, the use of self-tapping screws (self-tapping screws) should first consider this.

Q: What does the screw m4x6 mean?: Diameter 4mm length 6mm (just the length of the thread)

Q: What fasteners are manufacturers in China?: (8) Spring rain (Dongguan) Hardware Products Co., Ltd. (9) Zhejiang New Oriental Fasteners Co., Ltd. (10) Cixi Zhenning Machinery Co., Ltd.

Q: Fasteners are used in what areas?: General use of a wide range of applications, such as machinery, electronics, transportation, furniture, construction, chemicals, ships, toys, etc., life is everywhere. Aerospace fasteners are fasteners designed for aerospace vehicles.

Q: Why do some nuts and washers, and some nuts without washers: If the diameter of the screw and the diameter of the fixed parts of the hole size difference is relatively large, if not washers, nuts and parts of the contact area is relatively small, it is necessary to increase the contact area of the gasket. In addition, the pressing oblong hole, also need to add washer. The same reason is to increase the contact area, making the connection more reliable.