<%@language=vbscript%> <% option Explicit %> <% Dim objRs set objRs=server.Createobject("ADODB.Recordset") objRs.open "maintable",objconn,,adlockoptimistic,adcmdtable objRs.AddNew objRs("dateform")=Request.Form("dateform") objRs("name")=Request.Form("name") objRs("birthday")=Request.Form("birthday") objRs("mahal")=Request.Form("mahal") objRs("marrige")=Request.Form("marrige") objRs("Address")=Request.Form("Address") objRs("tel")=Request.Form("tel") objRs("millitary")=Request.Form("millitary") objRs("year")=Request.Form("year") objRs("lastdoc")=Request.Form("lastdoc") objRs("profission")=Request.Form("profission") objRs("language")=Request.Form("language") objRs("friend")=Request.Form("friend") objRs("job")=Request.Form("job") objRs("other")=Request.Form("other") objRs.update objRs.close set objRs=nothing objconn.close set objconn=nothing %> Dimensions of Rivet

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Blind rivet : Domed Head Aluminum Blind Rivet  | Large Head Aluminum Blind Rivet  | Copper Blind Rivet  | Steel Blind Rivet  |
                   Aluminum Blind Rivet With Aluminum Mandrel
Rivet: Round Head Solid Rivet  DIN 660
  | Countersunk Head Solid Rivet   DIN 661 | Oval Head Solid Rivet   DIN 662
           Flat Head Rivet  DIN 7338A  Pan Head Semi Tubular Rivet   DIN 6791 Countersunk Head Semi Tubular Rivet   DIN 6792
           Countersunk Head Rivet   BS 7855  |  Flat Head Rivet   DIN 7338B 
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Dimensions of Rivet

The main dimensions of a rivet include diameter of rivet, length of rivet, diameter of the head of rivet and depth of the hole of rivet. In other word, the dimensions of rivet are essential according to the need of costumer and the application of rivet.

 

Length of Rivet:

The length of rivet is defined based on the thickness of segments and the type of body of rivet. In solid rivets, the length of rivet is equal with the thickness of segments plus half of the diameter of rivet. In semi-solid or hollow rivets the length of rivet is equal with thickness of segments plus 0.65 of diameter of the rivet.

 

Is some special cases which the end of rivet should take a particular shape, the extra length of rivet should be defined by required tests.

 

  Note:

The length of rivet in ordinary rivets is the distance between the lower surface of the head and the end of rivet but the length of round-head rivets is the distance between the top point on the head and the end of rivet.

In the catalogues of Parch Saz Co. and also in this website, the length of introduced rivets is sometimes defined according to the thickness of segments.

 

  Diameter of the Hole:

The diameter of the hole should be a little more than the diameter of rivet to place the rivet into the hole easily. Of course this loosing is limited because the rivet should have friction and connection with the hole after riveting.

Parch Saz Co. produces rivets with the real diameter less than their registered diameter and the real diameter of hole should be equal with the registered diameter of rivet. The improper diameter of hole may bring various problems such as weak connection of bent body for rivet in thick segments and deformed end of rivet.

 

  Depth of the hole for riveting:

Rivets are usually made hollow to have an easy riveting but when the hollow rivets have not enough strength, the semi-solid rivets are better because these rivets have enough volume in the cut surface place. So the depth of hole should be enough to have an easy riveting and also to have enough cut resistance of rivet. For this purpose we recommend that the depth of hole for semi-solid rivets should be equal with registered diameter of rivet but the place of segment cut should not be placed in the hollow part of rivet while riveting low-thick segments.

 

 

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