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Hex Socket SCREW

What does this m and the back numbers stand for, as the usual m3/m6/m8 nuts?

Are the specifications of the screws also indicated?

The letter represents the thread type and the number represents the nominal diameter. Complete labeling should also include, pitch, thread length, rotation, necessary

To mark the mating tolerances of the thread, manufacturing the tolerance class and the nut screw surface treatment.

Nominal diameter: the diameter of the thread size, refers to the basic size of the thread large diameter.

Big diameter: the diameter of an imaginary cylindrical surface that is coincident with the external thread's top or the inner threaded tooth bottom. (d for external thread, d for female thread)

Path: the diameter of an imaginary cylindrical surface that is coincident with the top of an external threaded tooth or an internal thread. (1 on the corner mark)

The diameter of an imaginary cylinder that passes through the groove on the tooth type and where the width of the bulge is equal.

M48x1.5 said: The nominal diameter of 48mm, the pitch is 1.5mm, right-handed fine teeth ordinary thread.

How to differentiate the pitch of a screw

PB is flat round head flat tail self-tapping KB is countersunk head flat tail self-tapping PA is flat round head end self-tapping PWB is flat round head with a flat tail self-tapping and so on can be collected on the Internet: screw General expression method.

Screw teeth most commonly divided into mechanical teeth, also called machine silk teeth or machine teeth, self-tapping teeth, wood teeth, iron teeth, this is from the screw of the tooth type, and from different countries of the applicable standards: such as the British Machine teeth, American machine teeth, British self-tapping teeth, American self-tapping teeth and so on. M3 or M5 teeth are metric, generally you need to ask what type of tooth, such as the teeth, or self-tapping teeth and so on. If it is a mechanical tooth, not specifically tell you that the tooth distance is usually the standard tooth distance namely coarse tooth ... The metric coarse tooth is the standard pitch, for example, the standard tooth spacing of the M3 is the 0.5mm metric pitch is the distance between the adjacent two tooth peaks to know the tooth pitch of the tooth, you can see the film

Machining Tolerance Class

How to draw a threaded hole in CAD

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