Q:How much is a screw?

To see what screwdriver, if it is a small screw, and then you buy more words, a single cost may be a few cents, if it is a single purchase may be more expensive.

Q:Our company to purchase a number of fasteners to see when the CAD drawings in the technical requirements I do not know the specific to write those content

You mark the standard number and grade on the line, but the general standard is not required to issue a drawing. Quality inspection in accordance with the standard check can be.

Q:The idiom of the screw

Meaning modesty, that their own small insignificant, insignificant but indispensable.

Q:When do flat washers use GB95 when using GB97.1?

National standard GB95 applies to the performance level to 6.8, product grade C grade of the six head bolts and screws; as well as the performance level to level 6, the product grade is C grade of the nut, the surface of the hardened screwGB97.1 is suitable for six head bolts and screws with grade 8.8/10.9, grade A/B, grade 8/10, grade six, with a grade of A/B, and a self - tightening screw for surface hardening

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?

First with a small hammer and other heavy objects into the wood a little, and then a screwdriver, on the line, try

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:Fasteners are used in what areas?

In the international arena, fasteners according to the use of the field can be divided into two categories, one is the general use of fasteners, the other is aerospace fasteners.

Q:Gasket 300HV relative to what material?

For the 100HV level can choose ST12, ST13 and Q235, Q215, Q195, etc., the surface hardness can reach about 110HV

Q:how to use Motor washer

Spring washer loose, as well as sealing gasket, corrugated gasket clearance

Q:What's the meaning of the "200HV" of the gasket material? Is that the hardness level? What materials are usually chosen? Know predecessors please advice, younger brother is not very grateful!!!

Surface Vivtorinox hardness, general requirements not less than the number of commonly used non-ferrous metals, such as bronze, tin bronze, etc.