DCT (3/8-7/8 UNC/UNF) :    
 
 
Chamfering   Drilling   COOLANT 
  Designation D
min		 D
max
Dnominal
D2
d
L
L1
L4
L5
Th
  DCT 079-025-15.87-3/8UNC  0.00  0.00  0.00  0.00  0.00  0.0  0.0  0.0  0.00  3/8UNC
  DCT 084-025-15.87-3/8UNF  0.00  0.00  0.00  0.00  0.00  0.0  0.0  0.0  0.00  3/8UNF
  DCT 092-027-15.87-7/16UNC  0.00  0.00  0.00  0.00  0.00  0.0  0.0  0.0  0.00  7/16UNC
  DCT 099-027-15.87-7/16UNF  0.00  0.00  0.00  0.00  0.00  0.0  0.0  0.0  0.00  7/16UNF
  DCT 107-027-15.87-1/2UNC  0.00  0.00  0.00  0.00  0.00  0.0  0.0  0.0  0.00  1/2UNC
  DCT 115-027-15.87-1/2UNF  0.00  0.00  0.00  0.00  0.00  0.0  0.0  0.0  0.00  1/2UNF
  DCT 123-027-15.87-9/16UNC  0.00  0.00  0.00  0.00  0.00  0.0  0.0  0.0  0.00  9/16UNC
  DCT 131-027-15.87-9/16UNF  0.00  0.00  0.00  0.00  0.00  0.0  0.0  0.0  0.00  9/16UNF
  DCT 135-031-19.05-5/8UNC  0.00  0.00  0.00  0.00  0.00  0.0  0.0  0.0  0.00  5/8UNC
  DCT 147-031-19.05-5/8UNF  0.00  0.00  0.00  0.00  0.00  0.0  0.0  0.0  0.00  5/8UNF
  DCT 167-036-19.05-3/4UNC  0.00  0.00  0.00  0.00  0.00  0.0  0.0  0.0  0.00  3/4UNC
  DCT 175-036-25.4-3/4UNF  0.00  0.00  0.00  0.00  0.00  0.0  0.0  0.0  0.00  3/4UNF
  DCT 194-042-25.4-7/8UNC  0.00  0.00  0.00  0.00  0.00  0.0  0.0  0.0  0.00  7/8UNC
  DCT 206-042-25.4-7/8UNF  0.00  0.00  0.00  0.00  0.00  0.0  0.0  0.0  0.00  7/8UNF

Hole tolerance: D+.002 in average conditions. However, it can be higher or lower according to machine and tooling conditions.
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