Technical Tips

Double seam dimensions

double seam diemsions diagram

Key
a = actual overlap
b = body hook butting (b/c * 100)
c = body hook butting (b/c * 100)
d = body hook length
e = countersink depth
f = seam length
g = end hook length
h = seam thickness
i = seam gap



 

Standard Dimensions
  csnk seam
length		 seam
thickness		 body
hook		 e.h.
length		 e.c.
thickness		 b.w.
thickness		 overlap %bhp
standard seam                                    
inches   0.124   0.115   0.0445   0.0825   0.0735   0.0080   0.0085   0.051   83
mm   3.14   2.90   1.13   2.09   1.86   0.20   0.21   1.29    
miniseam / euroseam                                    
inches   0.126   0.102   0.0400   0.0755   0.0660   0.0070   0.0062   0.047   86
mm    3.20   2.59   1.01   1.91   1.67   0.18   0.16   1.19    
microseam                                    
inches   0.081   0.058   0.0385   0.0385   0.0370   0.0062   0.0062   0.026   85
mm   2.05   1.46   0.97   0.97   0.93   0.16   0.16   0.66    

   

 

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