This National Acme replacement set screw part number 1490 (item 74-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 set screws, part number 1148 (item 74-XA) used in assembly AM-412750, please enter a quantity of 5.
22845 Hoover Road
Warren, Michigan 48089
v: (586) 755-7300
f: (586) 755-1229
Mon-Fri 8am-5pm
This email address is being protected from spambots. You need JavaScript enabled to view it.