Loose arm. Discontinued
A-28 non-alignable bottom fastener with swivel, nuts, bolts. DISCONTINUED
#23 non-alignable hanger complete with swivel (bolts extra) for wood frame.
#21 non-alignable top hanger with "T" swivel
3/8"-16 x 1-1/4" machine bolt, 3/8" washer, lock washer, nut (UR-120).