Q:How is the screw nailed to the wall

Use a hammer to make a hole in the wall, and then plug a plastic expansion tube, the last screw.

Q:What is the fastener and others?

Fasteners are collectively referred to as a class of mechanical parts used to fasten two or more parts (or components) into a unit. Fasteners include bolts, studs, screws, nuts, washers, Pin, etc.,

Q:Why the screw thread more closely, spin into the more effort?

Screw thread more dense, indicating the screw thread deep and shallow, the screw in the advance the resistance of the smaller, when the spin naturally more effort.

Q:Why are the screws of the screw?

I have not heard the concept of non-standard thread, because the thread is used to assemble, so the lathe in the car thread, the amount of feed and other parameters are given.

Q:304 and 201 stainless steel spring washers that soft? Easier to move

304 high nickel content, good processing performance! Wayward!201 of the crisp, processing, the processing department will ask you the material, if you want to increase the price of 201!

Q:what parts do Fasteners include

Screw: also by the head and screw two parts of a class of fasteners, according to the use can be divided into three categories: machine screws, set screws and special purpose screws. The machine screw is mainly used for a fastening screw hole part, with a through hole between the parts of the fastening connection, no nut matching (this connection is called the screw connection, also belong to the detachable connection; Used in conjunction with nuts for fastening connections between two parts with through holes.) The locking screw is mainly used to hold the relative position between the two parts. Special purpose screws such as rings are used for lifting parts.

Q:Was rusty rust, the screwdriver are turning how to do, is a very important thing

Red: some of the top of the device screw corrosion to take shape, can not use wrenches, wire clamp discharge, both the impact method. First with a hammer and through the top of the cone in the vertical direction of the screw impact of a v-shaped groove. Then, adjust the chuck angle, along the direction of the screw out of the impact, see Figure 2. To be loose, you can use the wire clamp to screw out the screw. "A" or "ten" when the screw slide, you can also use this method, combined with the wire clamp screw out the screw.

Q:What are some of the common fastener products?

There is also a fastener called a nail, which is made up of the nail and the nail, which is fixed by welding to another part and connected together.

Q:What is the difference between gaskets and seals?

The washer pad is connected between the nut pieces and parts; sealing ring, ring is formed by one or several parts of the cover, fixed in a ring or a washer bearing and another ring or gasket contact or metal ring is the flat form of the labyrinth of narrow gap.

Q:When is the gasket (flat pad, spring pad)

A washer to prevent loosening of bolts. That is, elastic washer, anti loose washer works very simple. It consists of two washers. The outside is embossed with a radial surface, while the inner oblique tooth surface. When assembled, the medial oblique tooth surface relative to the outer radial surface and both ends of the contact surface relief into the occlusal state when the connectors are vibration, and the trend of bolts loosening, only allow two washers inside oblique tooth relative dislocation, resulting in uplift of tension, so as to achieve the 100% locking.