AM-412750 item 21 - Jam Nut

This National Acme replacement jam nut part number 560 (item 4-XA) is used in 4th Position Die Slide Assembly AM-412750.   View any of the following layout assembly drawings of the complete multispindle attachment for reference.  This replacement part may be used in attachment assemblies that fit numerous size Acme Gridley multi spindle screw machines and/or positions.

Acme Gridley 1-1/4" RB-8 Reaming Attachment - 4th Position
Acme Gridley 1-1/4" RB-8 Universal Threading Attachment - 4th Position

For a complete set of Acme Gridley replacement jam nuts, part number 560 (item 4-XA) used in assembly AM-412750, please enter a quantity of 5.