How to tell a 1000.4 vs 1000.2 Dish?

If they are a common size you can get them at Home Depot and Lowes as well.
Yep, they're common 1/4-20 thread for the mounting and adjusting bolts. The elevation fine tuning nut is 5/16-20. The various spacers are 1/4" nylon bushings, and the longer carriage bolts for the lower reflector mounting and pole mount also came from Ace, although I'd expect HD and Lowes would also have them.
 
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