1-1/4" RB-8 item 20A - Spindle Drive Shaft Nut

View the Acme Gridley 1-1/4" RB-8 illustrated code reference drawing for Group A

This National Acme replacement spindle drive shaft nut part number is for Acme Gridley 1-1/4" RB-8 multi spindle screw machines starting with serial number AM-40548.  Please contact us if your screw machine serial number is prior to this number.

For some Acme Gridley screw machine models, this spindle drive shaft nut is referenced as item number 16-D or 2-DD.