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189 ER – End Rolling Attachment

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189 ER - End Rolling Attachment

The 189 ER Series fits most lathes and multi-spindle screw machines.

Range of specifications include:

  • #6-40 to 1/4-28
  • M 3.5 x 0.6 to M5.5 x 0.9
  • Work Face: .3932

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View ER 189 size specifications for both Metric ISO Threads and Unified Threads in the tables below. For all sizes, .6L, 1L and 2L are available.

Model 189 Metric ISO Threads Unified Threads
Size Size
M 3.5 x 0.6 #6-40
M 4 x 0.75 #8-32
M 4 x 0.7 #8-36
M 4 x 0.5 #10-24
M 4.5 x 0.75 #10-32
M 4.5 x 0.5 #12-24
M 5 x 0.9 #12-28
M 5 x 0.8 #12-32
M 5 x 0.75 1/4-20
M 5.5 x 0.9 1/4-28
1/4-32