DIN7504 Phil Recessed Pan head Self-Drilling Tapping Screws

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Product Description

Product Name

DIN7504 Phil Recessed pan head Self-drilling Tapping Screws

Material

Carbon Steel, Stainless Steel 201/ 304/ 316  or others.

Size

8#-18*13 ~  14#-14*125

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


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Q:Engineering argument, usually referred to as the M3 screw, M refers to what is the meaning? The Please instruct the engineering staff.
International Metric Thread System: The national standard CNS adopts the thread. The crest is flat and easy to be turned. The tooth bottom is rounded to increase the thread strength. The thread angle is 60 degrees. The specification is expressed by M Metric thread can be divided into two kinds of coarse and fine teeth, such as M8x1.25 (M: code: 8: nominal diameter .1.25: pitch).
Q:The screw is too tight not how to do it
Suggested the following methods: First, to the market to sell gold groceries to buy sets (about 5-6) Hexagon screw wrench, about 5-6 dollars. Second, with a lighter to paint the surface of the paint burned, and then drop a few drops of oil, and then the appropriate size of the screwdriver twist to see if it can!
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:How do you choose the appropriate gasket for bolt or screw connection?
When the bolt is connected, the target of the washer is to disperse the material which is connected with the material, reduce the damage to the surface of the material to be connected when the bolt or the nut is reduced, or prevent the loosening of the bolt. When you choose the gasket can be the actual need to relax the use of spring washers, to protect the surface of the material to be connected, optional plain washers. The principle of choice is that the inner diameter of the washer is slightly larger than the outer diameter of the bolt. Screw connection, the use of slightly larger than the location of the largest screw flat washers can be.
Q:Would like to know the role of flat washer?
Flat washer1 generally used for multiple parts, to increase the bearing surface, covering the larger hole, to prevent damage to the surface of the parts, large washers for wood parts.
Q:Fasteners often say that the nature of galvanized oxidation is what it means
True color means that the surface of the fastener is not treated. Galvanized refers to non-zinc easily oxidized metal fastener surface coated with a layer of zinc, the role is to prevent its rust. Oxidation refers to the surface of the metal fastener through a chemical reaction to produce a layer of rust-proof film, the main role is rust, the other can also beautify the appearance.
Q:The difference between fasteners and standard parts
Fasteners and standard parts are the same.
Q:This screw ye use, and how to use next to the cover
This is an expansion screw. Take a suitable electric drill bit to drill a hole in the wall, and then put the sleeve into the eyes of the drill, put the screw into the sleeve, this than the ordinary screw firm.
Q:Why should the screw twist clockwise?
Because the screw on the original flute is the clockwise direction of it
Q:I would like to ask what is the standard gasket and gasket in general what material?
Carbon steel, if there are 45 steel, 65 manganese, that is, medium carbon steel, low carbon steel.

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