DR-2XD (.625-2.344" 2xD) :    
 
 
Drilling  
  Designation
D

L

L1
D
max

d

D3

L4

cc
  DR079-157-100-2  0.00  0.0  0.0  0.00  0.00  0.00  0.0  R1/8
  DR083-165-100-2  0.00  0.0  0.0  0.00  0.00  0.00  0.0  R1/8
  DR2219-4438-150-5  0.00  0.0  0.0  0.00  0.00  0.00  0.0  NPT1/4
  DR2281-4562-150-5  0.00  0.0  0.0  0.00  0.00  0.00  0.0  NPT1/4
  DR2312-4625-150-5  0.00  0.0  0.0  0.00  0.00  0.00  0.0  NPT1/4

Hole diameter can be changed by shifting drill center along lathe X-axis.
Hole tolerance: D+.006/-.002 in average conditions. However, it can be higher or lower according to machine and tooling conditions.
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