ECU-E-3 :  3 flute, 38° helix short undersized slot / drill solid carbide endmills.  
 
 
Shouldering Slotting Ramp down Helical interpolation Plunging & recessing Counter boring
  Designation
D
d
ap
L
Flute
Ha°
Rd°
ShankW-Weldon		 fz
(min)		 fz
(max)
  Grade
  ECU028E04-3W06-57  2.80  6.00  4.00  57.00  3  38.0  5.0  W  0.01  0.04 IC900
  ECU038E05-3W06-57  3.80  6.00  5.00  57.00  3  38.0  5.0  W  0.01  0.04 IC900
  ECU048E06-3W06-57  4.80  6.00  6.00  57.00  3  38.0  5.0  W  0.02  0.05 IC900
  ECU057E07-3W06-57  5.70  6.00  7.00  57.00  3  38.0  5.0  W  0.02  0.06 IC900
  ECU067E08-3W08-63  6.70  8.00  8.00  63.00  3  38.0  5.0  W  0.03  0.07 IC900
  ECU077E09-3W08-63  7.70  8.00  9.00  63.00  3  38.0  5.0  W  0.03  0.08 IC900
  ECU097E11-3W10-72  9.70  10.00  11.00  72.00  3  38.0  5.0  W  0.03  0.09 IC900
  ECU117E12-3W12-73  11.70  12.00  12.00  73.00  3  38.0  5.0  W  0.03  0.10 IC900
  ECU137E16-3W14-83  13.70  14.00  14.00  83.00  3  38.0  5.0  W  0.04  0.11 IC900
  ECU157E16-3W16-92  15.70  16.00  16.00  92.00  3  38.0  5.0  W  0.04  0.12 IC900
  ECU177E18-3W18-92  17.70  18.00  18.00  92.00  3  38.0  5.0  W  0.05  0.13 IC900

Undersized short design for keyholes
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