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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.
 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