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Replacement parts for Acme Gridley multispindle screw machines under the "D" key code reference group.  National Acme Group D key code reference is used on all sizes of Acme Gridley multispindle screw machines except 3/4" RA-8 and 1-1/4" RA-6 and 5-1/4" RAC-6 which use the "DD" key code reference for this group of replacement parts.

Acme Gridley screw machine sizes completed in our catalog Group D:
1-1/4" RB-8 and 1-5/8" RBN-8

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JEM Automatics & Tooling, Inc.


22845 Hoover Road
Warren, Michigan 48089
v: (586) 755-7300
f: (586) 755-1229
Mon-Fri 8am-5pm

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