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National Acme Group K - Main Drum Shaft and Cams

Replacement parts for Acme Gridley multispindle screw machines under the "K" key code reference group.  National Acme Group K key code reference is used on all sizes of Acme Gridley multispindle screw machines except 9/16" RA-6 and 9/16" RAN-6 and 1" RA-6 and 1" RAN-6 and 3/4" RA-8 and 1-1/4" RA-6 which use the "KA" or "KK" key code reference for this group of replacement parts.

Acme Gridley screw machine sizes completed in our catalog Group K:
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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