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thread insert for sheet metal

  • Thread starter Thread starter Soffio
  • Start date Start date

Soffio

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Good morning.

I'm here to ask for help.
I should produce a sheet metal box (of 1.5mm thickness), the fixing between the various pieces that make up the box will happen by means of screws. given the reduced thickness of the sheet, it is difficult to make a thread.
My question is: what they call and where could I find inserts that allow me to fix the pieces between them?
I happen to see something similar to what I'm talking about (in the annex)


thanks in advance
 

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Good morning.

I'm here to ask for help.
I should produce a sheet metal box (of 1.5mm thickness), the fixing between the various pieces that make up the box will happen by means of screws. given the reduced thickness of the sheet, it is difficult to make a thread.
My question is: what they call and where could I find inserts that allow me to fix the pieces between them?
I happen to see something similar to what I'm talking about (in the annex)


thanks in advance
 
pem, the most common among the lamierists, so much so that now has become a common name the brand.
find the catalogue here https://www.pemnet.com/italian_catalog/files/inc/1378192502.pdfthose that serve you are cl (if you talk about stainless steel sheet) or s (if it is carbon steel sheet), they are just those of your photo.
the hole has a precise size, they are inserted at pressure, with special equipment.
besides these there are of all types, tearing (cylindrical, hexagonal...), welded, etc...
depends very much on the application, the possibility of working the sheet, the characteristics that must have the finished object, the welded (http://www.ldfasteners.com/inserti-a-saldare/ ) I used them for a box that had to be stagnated for example. tearing (https://www.far.bo.it/it/prodotti/inserti-filettati/esagonali-aperti.html) You can use them without having to match a matrix behind, so you can mount them in a tube, for example.
the best known and used for each application are definitely pem.
 
Last edited:
I suggest using hexagonal ones instead of cylindrical ones, even in the case of slightly rough screws do not rotate in the seat, sometimes with cylindrical ones can happen.
If the sheet is laser cut, make cylindrical or hexagonal holes does not change, but you have a more robust final product.

if the holes are on the column drill, you are obliged to use the cylindrical ones
 
tear inserts have a larger axial encumbrance and lend themselves less to a series production, if this is the case
 

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