Armstrong was bought out in1994 by Danahar Corp. & Cooper tool, then formed Apex Tool Group
that owns; Allen, Armstrong, Gearwrench, Crescaen,Jacob Chucks, Cleco, Cambell, Dotco, Erem,
Lufkin, Wiss, Nicholson, Weller, Xcelite and others.
when I put my zip code to locate a dealer, a whole list for FASTENAL came up.
I saw Armstrong listed under; Kahntools, M.S.C. & Graingers and others.
I always considered them a strong tool, a few that I have are beafy.