How to unscrew a screw that has no inner screw pattern?

[abdulbadii]

How do we unscrew a screw with no inner screw pattern?

Just saw one on other place so is not on hand now, it has no engraved pattern at all hopefully its pic, could be brought in

 

[sysprog]

How do we unscrew a screw with no inner screw pattern?

Just saw one on other place so is not on hand now, it has no engraved pattern at all hopefully its pic, could be brought in

Wha? Do you have an image that you could post? Your description is not adequate . . .

 

[berkeman]

How do we unscrew a screw with no inner screw pattern?

Just saw one on other place so is not on hand now, it has no engraved pattern at all hopefully its pic, could be brought in

Do you mean that the screw head is flat and has no pattern for a tool to unscrew the screw?

https://previews.123rf.com/images/lior2/lior20901/lior2090100037/4178113-recessed-screw-head.jpg

 

[Bystander]

no inner screw pattern?

You mean a "rivet?"

 

[Baluncore]

How do we unscrew a screw with no inner screw pattern?

If it has only a small hole in the centre then it is probably a pop-rivet.

To remove an aluminium rivet, drill it out with a twist drill about 2.5 times the diameter of the hole.
If stainless steel, drill it with a cobalt drill, or carefully grind the head off flush with the surface.

 

[AZFIREBALL]

Is it a carriage bolt?

 

[abdulbadii]

You mean a "rivet?"

Very likely, some white thing around it, suspect it's like common hot glue. It's on China Krisbow outlet extension plug having 3 parallel plugs

 

[berkeman]

Can you post a picture? You can use the "Attach files" button below the Edit window to upload a JPEG or PDF file.

 

[abdulbadii]

 

[Tom.G]

Here is a "re-focused" copy of the image with a little more detail:

Two possibilities here:
(1)
Those look like rivets. Your best bet is to drill them out using a slightly oversized drill bit. Oversized because often the body of the rivet is also expanded, so you have to get slightly below the head.

Even then, you may have to drive the rivet out because the rest of the body has also expanded to a tight fit in the hole. This occurs when the rivet is a soft material, used because less force is needed in manufacturing to 'mushroom' the end.

It is often possible to do the operation using a hand-held drill but you WILL need to hold the work in a vice; being plastic you probably will not be able to just clamp it securely enough to the work surface.

(2)
Those could be something like "press screws" (I don't know their correct name), essentially nails with several grooves cut in them, often spiral grooves with a very shallow pitch. There is a hint of grooves on the brightly lit one on the right side of the photo, at about the 7 or 8 o'clock position. If the grooves are there and they have an obvious head on only one end they can be pressed out, or driven out if you do not have a press.

Hope this helps! Please let us know your progress.

Cheers,
Tom

 

[Lnewqban]

Very likely, some white thing around it, suspect it's like common hot glue. It's on China Krisbow outlet extension plug having 3 parallel plugs

By using rivets instead of screws, the manufacturer may have tried to discourage any attempt of disassembling and repair.
How do you plan on putting the assembly back together?

 

[berkeman]

Here is a "re-focused" copy of the image with a little more detail:

Very cool, Tom! How did you "re-focus" the image?

It's on China Krisbow outlet extension plug having 3 parallel plugs

Why are you wanting to take apart an AC Mains extension plug assembly? Sounds a bit dangerous...

 

[abdulbadii]

Inside it, it's installs some pressing spring for clasping/fastening the 2 metal plug, which is too strongly tight, so try to detach them
Though have done the same China's stuff with triangular screw but bit surprised this time

 

[berkeman]

Though have done the same China's stuff with triangular screw but bit surprised this time

As has already been mentioned...

By using rivets instead of screws, the manufacturer may have tried to discourage any attempt of disassembling and repair.

 

[anorlunda]

Inside it, it's installs some pressing spring for clasping/fastening the 2 metal plug, which is too strongly tight, so try to detach them

Without that spring, the electrical contact may not be good, making it a fire hazard. To avoid danger, leave it alone.

 

[berkeman]

Since we now know what this OP is asking about, this thread is now closed for safety reasons.

@abdulbadii -- please don't hack into AC Mains stuff.