DeXun AutoGrade Drain Plug
Description
If you have more questions, please contact us or send us an email!
Details are as follows
f you have more questions, please contact us or send us an email!
| Size | M12-1.5 | | Shape | Hexagonal | | color | silver | | Material | steel | | Magnetic | no | | Length | 11/16(inch) | | Product Type | standards | | I Deal In | New Only | | Minimum Order Quantity | 300 Piece |
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How To Describe The Diameter And Length Of The Socket Head Screw?
1. Pay attention to the tightening force of screws
Right people think that the tighter the screw, the better. In fact,
screws have their torsion range. If it is lower than this range, it
may cause looseness. If it is higher than the range, parts or
screws may be damaged. The best way is for technicians to operate
in a professional garage with a torque wrench. If there is no such
condition, we must pay attention to it. Do not continue to tighten
the screw, otherwise it will cause screw thread sliding teeth,
resulting in the scrapping of the whole part, or screw the hexagon
groove of the screw round, which is not easy to loose.
2. Lock the same plane. If there are more than two screws, one by
one is required
Take the stands. Most of the front cover of the bracket is locked
by 2-4 screws. When locking four or more screws on the same plane,
they should be tightened diagonally one by one. We can't tighten
one screw directly at a time. We should tighten them one by one
several times. When there are 2-3 screws in the same plane, they
must also be locked evenly.
Quality:
Factory:
How Are Screw Fasteners Produced?
1.The metal materials for screw manufacturing generally use the
wire rod which has been made into screw award in advance. Because
the wire rod will deform and become thick after forging, we should
select the wire rod with slightly smaller screw shaft according to
the demand.
2. The screws and wires of the line diode which are transported to
the proper length position are straightened through the machine and
then transported to the cold heading machine
3. The first punch moves to make the wire ready to form, and then
the second punch moves to forge and press the wire again to form
the finished product. In the cold heading process, the number of
fixed dies (pressing dies) and stamping (flattening) dies (punches)
are not the same. Some complex screws may need multiple punches to
form, which requires multi station equipment to form screws.
4. After the movement of the punch, the head of the screw has been
completed, but the part of the screw shaft is not threaded. The
forming method of the screw thread tooth is to rub the thread.
Thread rolling is a kind of cylindrical blank formed by multi
station or heading machine by using two relatively rotating thread
rolling die (rubbing plate) with thread teeth engraved.
5. After starting and rubbing the teeth, the whole screw has been
produced. Of course, in order to make the appearance of the screw
brighter and better performance, the surface treatment process is
usually done. Such as stainless steel screw cleaning passivation,
carbon steel screw surface plating and so on. Make screws and
fasteners of various colors.
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