Q:The Symbolic Meaning of Screw

The symbolic meaning of the screw is generally refers to Lei Feng's "screw spirit", is consciously put the individual into the cause of the party and the people, the individual obey the whole, obey the organization, loyal to duty, work conscientiously, do a line of love, and serve the people wholeheartedly the spirit of.

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

Q:What is the fastener and others?

Department of mechanical engineering (a subject); mechanical parts (two subjects); fasteners (three subjects)

Q:The idiom of the screw

Screw idiomatic meaning 1. work conscientiously, obey the organization, where I go, loyal to duty, Lei Feng's "screw spirit." 2. Individuals obey the whole: ordinary people or things, dry line of love and his party.

Q:Who include who btween them?

A general term for a class of mechanical parts used to fasten two or more parts (or components) into a unit.

Q:Bolts and other connection fasteners some points A B C grade what it means

The same standard number! Different grades of bolts, their material is not the same! Just their detection method just the same!

Q:What is the invention of the screw?

Today, many things are fixed with screws. Look around the house, the eyes see all kinds of things - from furniture to food processors, are connected with screws. The spirits were invented more than 2,000 years ago, but less than 500 years for fixing things.

Q:Gasket 300HV relative to what material?

For the 140HV level can choose 08F, 08Al and 10, 10F, etc., the surface hardness can reach about 140HV

Q:The main meaning is that the design to make some specific requirements to achieve consistency.

Referred to the selection must be selected in the national standard parts, otherwise the changeability does not exist. Speaking of norms nothing less than the following: function according to national standards (strength, rust, shape ....);

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.