DIN558 Hexagon Head bolts- Full Thread

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Product Description

Product Name	DIN558 Hexagon Head bolts- Full Thread
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：

DIN558 Hexagon Head bolts- Full Thread

Q: What is the meaning of the screw and the 4 and 8?: Screw should be written on the 4.8 bar, 4.8 on behalf of the strength level

Q: The mirror under the mirror put the toilet glass is broken, the original screw rust deformation, and pulled out. How to rust the screw: The easiest way to change the place to hang the original place to hang a mural

Q: Do not use self tapping screws: Flat washer is generally used in the connecting piece is a soft texture, a hard brittle, its main role is to increase the contact area, pressure distribution, to prevent the soft texture of the crush. The basic function of the spring of the spring washer is to tighten the nut after the nut to a force, increasing the friction between the nut and bolt! The material is 65Mn (spring steel), heat treatment hardness is HRC44 ~ 51HRC, through the surface oxidation treatment.

Q: Specific conditions for use of spring washers: A large number of materials in electronic and electrical appliances, carbon, stainless steel, copper alloy etc.. WL type corrugated washer: WL type corrugated washer as a mouth elastic washer, it usually can be installed in a small space, such as to reduce bearing prestress bearing running noise, improve the operation accuracy and stability of bearings. In addition to the electronic appliances also have a large number of applications. Materials are carbon steel, stainless steel, copper alloy, etc.. WN type: WN type wave washers wave washer for multilayer wave overlapping elastic gasket, the series and type WL comparison, because is composed of multilayer material, so in the same compression stroke under the curve of K value is WL gentle, suitable for the whole working stroke and large elastic, elastic and uniform release situation.

Q: I would like to ask what is the standard gasket and gasket in general what material?: Less dosage, the metal with Q235, rubber with XB200, are very common. If the amount is large, according to the situation to choose the most economical

Q: Also known as screw nails, I want to nail on the board, but there is no way to nail into the hard, how nail?: You say is a self-attack nail with a screwdriver twisted into the picture is not self-tapping is not used on the board, which is used on the expansion tube, to change the nail or wood screws, or direct use Nail nail

Q: In the fastener industry, 1018 refers to what material: Low carbon steel, generally used for the production of self-tapping screws and screws and other low-strength fasteners products. 1018 steel chemical composition percentage: carbon C: 0.17-0.24; manganese Mn: 0.7-1.0; nickel Ni <= 0.25; phosphorus P: <= 0.035; sulfur S: <= 0.035; silicon Si: 0.17-0.37; <= 0.25; copper Cu: <= 0.25 domestic commonly used 18A and 22A material, carbon 0.18%. Domestic steel mills are now used daily SWRCH18A

Q: Is it hard to heat the fasteners?: Fasteners are a kind of standard parts, and their requirements are often higher than other standard parts, but heat treatment is better

Q: Fasteners are used in what areas?: facilities, tools and instruments of human production will not be produced, people will no longer have electricity, no more tap water, no longer have a variety of automation equipment, no longer There is a lot of construction projects will not be able to solve the problem of connecting technology and a comprehensive shutdown, the level of human society productivity at least 300 years back, our lives will become incredible.

Q: Why do some nuts and washers, and some nuts without washers: General screw diameter and the diameter of the fastening parts of the hole is not large, the nut and parts of the contact area is relatively large, you can not add a gasket

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