Doors| Lockwood

3-1/2" straight spindle thread is 18 tpi. 2-1/4" knob

Standard duty 2-1/4" knob is factory pinned to swivel spindle
to 1-3/4" door. Spindle has two 3/8" centers. Inside knob has
two case hardened set screws and spindle is threaded 3/8-18

2-1/4" knob pinned to a straight spindle. The inside kob is attached
with two case hardened set screws. 3/8-18 tread on knob and spindle.

Swivel spindle, 9/32" square,
18 tpi, 4-3/4" long with two 3/8" solid centers

Swivel spindle, 9/32" square,
18 tpi, 4-3/4" long with two 3/8" solid centers
and three pinning holes