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Hole Arrangement

 

 

 

Hole Size and Pitch

 

                                                                                 

 


Open Area

 

Open Area is the ratio between the total area of the holes and total sheet area.  Normally it is expressed as percent.

 

Open Area Formula

 

Round Hole, 60°  Staggered                                                   Round Hole, Straight Row

              

 

 

Round Hole,45° Staggered                                                 Square Hole, Staggered

              

 

 

Square Hole, Straight Row                                            Round End Slot, Z Type Staggered

              

 

 

Round End Slot, Straight Row                                         Round End Slot, K Type Staggered                         

              

 

 

Square End Slot, Z Type Staggered                                       Square End Slot, Straight Row

              

 

 

Square End Slot, K Type Staggered

 

 

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