Hex Head Combination Screw with washer and spring washer Sem Screw
Combination screw is a screw with a spring washers with a flat pad
by thread rolling, combination of fastening assembly together.And two combination screw is a screw with only one ball pad or only
with a flat mat, would you still can only go with a tooth of the
assembly.The combination screw countries expressed in GB9074 label.Common cross slot label is GB9074.8 first three combination screw
small countries.This. 8 refers to small head.Is often said that the pan head screw head size.With letters for the PM.The representation method of combination of professional screw
manufacturer, habitual is trine PM.The commonly used cross channel big label is GB9074.4 combination
of pan head screws countries.The combination of professional call big pan head screws.R head, or head of B.That is the combination of screw head is bigger than small head
combination screw head, thicker.And the commonly used one is outer hexagonal screws, this is the
outer hexagonal screws.Often said recess outer hexagonal screws.The label for GB9074.13.
Combination of the material of screw is divided into iron and
stainless steel.Iron is made of different screw rods of iron.General combination screw wire is made of 1010101 8, 10 B21 etc.10 b21 8.8 is used for combination of screw.Like Allen combination screw in 8.8 on the Richter scale is used 10
b21 wire to do it.Well after heat treatment.After heat treatment, removal of hydrogen after plating.This is to prevent the combination hexagonal screw ball pad
fracture.The combination of stainless steel screws, combination screw in the
market, generally refers to the combination of stainless steel
SUS304 screw.201 combination screw generally do little.Very few combination screw manufacturer to produce 201 combination
screw.Because the screw of the stainless steel 201 wire hardness is not
very good control, it is easy to produce cracks.
Combination Screw is the biggest difference between screw and
ordinary screw, screw combination is combined with other
components, such as elastic washer, flat pad, tooth, etc., and
screw is installed before rolling teeth commonly, after in the roll
teeth washer is not to come out.
|Name||Hex Head Combination Screw with washer and spring washer Sem Screw
|Head Type||Hexagonal Head|
|Surface treatment||Zinc plated|
|Packaging||25kgs carton + pallet|
Combination screw material usually for iron and stainless steel,
the biggest advantage is with the corresponding gasket, can make
the production line operation convenient, improve work efficiency,
and therefore is widely used in electric, machinery, furniture,
Overall to combination screw is widely used in electric, electric
power, machinery, electronics, home appliances, furniture, boat
ship and so on.But it says the combination of different screw has different
functions.Such as cross combination of pan head screw, generally used in
small electronic products.Bigger cross outer hexagonal screws used in large electric
products, such as frequency converter, some big inverter above is
useful to many cross outer hexagonal screws.Playing on the inverter cabinet.Make relax fastening effect.In brought flowers 2 combination screw tooth, such as the use on
the frequency converter, function is used to break the paint, make
the second combination screw on the chassis panel all electricity.Still, such as the quartet line pressing combination screw, it
itself is a pan head screw with a square pad 2 combination screw.Is commonly used in the terminal in the following.Function is used to wire, used for line pressing.
1, the screw is not easy to change under the action of external
force, so can reduce the time of the assembly and maintenance time
2, has a larger torque transmission capacity, to avoid the
unnecessary waste and not damage caused by the damage on the
surface of the screw head electric plating.
3, at the time of twist screws, reduce the labor personnel section
load force and energy consumption.
4, elliptic geometry structure increases the safety coefficient of
5, reducing the stop waiting for the assembly line, the possibility
of rework and scrap.