DIN7504 Phil Recessed Countersunk head Self-Drilling Tapping Screws

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Product Description

Product Name

DIN7504 Phil Recessed Countersunk 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.


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1. Reliable Supplier

2. High Quality

3. Standard Producing Technology

4. Competitive Factory Price

5. Fast Delivery


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Q:What material is used for spring washer
Usually with 65MN spring steel or 70# carbon steel, 3Cr13, also available in stainless steel material SUS304 or SUS316. 65Mn or some other low carbon steel, such as Q235, Q195, etc.
Q:A194 GR3 is what style fasteners
A194 American standard I know is the US system, but now do not understand is GR3 in the end is what it means
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 are some of the common fastener products?
The washer is a flat, rounded fastener that is typically mounted between bolts, screws, or between the support surface of the nut and the surface of the connecting part to increase the contact area of the connected part and reduce the pressure in a certain area , To ensure that the connection parts will not be damaged; there is a flexible washer, but also to prevent the nut loose situation.
Q:M4.8 * 25 What does it mean in screw size?
Nominal diameter of 4.8mm, the length of 25.4.8 should be more from the tapping, should not use M said, M generally said machine thread M4.8 is the screw size 25 is the length of the screw diameter 4.8mm, length 25.
Q:Screw, nut, gasket connection order is how ah, elastic gasket and cushion under what circumstances should be placed on the
The main purpose of the elastic cushion is to prevent loosening, which is added at the end of the screw, and the screw nut is arranged on the side of the nut.
Q:Do not use self tapping screws
No provisions of self tapping screws without gasket, but because the self tapping screws are often used in non regular removal of the place, and will not force big place, so unless there is a need to increase the stress area of the nut, generally do not have to use the gasket.Self tapping screws also have a flat head, in this case, the general should be smaller than the top of the back, or else they can not get into the hole in the ah.
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:Fasteners often say that the nature of galvanized oxidation is what it means
True color refers to the surface of the fastener is not any treatment, copper is copper color, iron is the color of iron, aluminum is the color of aluminum. Galvanized iron is the surface of the fastener coated with a layer of zinc, the role is rust. Oxidation refers to the surface of the fastener to the chemical reaction, to produce a layer of anti-rust film, the main role is rust, the other can also beautify the appearance.
Q:How to remove when the screw is not threaded
It seems that you do not call the thread. It seems nothing better way. You can drill a little deep groove ah

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