On Mar 25, 8:52*am, Andy wrote:
On Mar 25, 5:30*am, "HL Falbaum" wrote:

Are you *sure* they are 4-40? Considering source of TR21 they may be metric.

I wondered the same thing too so I checked the TT-21 installation
manual. *It says 4-40.

Andy (GY)


I've gone to http://www.smallparts.com for hard to find fasteners.