The 1st pic are ludwig rockers bass drum claws. the other bass drum claws are slingerland

The fourth picture of hoop claws are for a square profile hoop... And since you have those (Yamaha looking) tension rods in your other post, I think these may be Yamaha as well. They use a square profile hoop.

The 2nd and 3rd picture are of nuts with collars that are used in various manufacturing/manufactured products...I have used them many times in IT electronic cabinets. Typically they (the nuts with sleeves) slip and lock into one of the holes on a flat steel rail (similar to those used hanging or mounting garage door openers don't know what they are called). A screw is used to attach a shelf or piece of equipment using the holes and nuts at any vertical level in the cabinet...ie rack mount. For the life of me I can't remember what they were called...I'm retired so ya gotta give me a break.

I have some capture nuts like those in the 2nd and 3rd pictures for my rolling 19 inch equipment rack. Originally it held HP test equipment now it holds the bits for my PortaStudio XL ( 2 ADATs, MidiVerb, compressor, EQ, Mackie 1604 on top)

Yes indeedy....

Cheers

John

The claws in the first picture are the sort of generic ones you can buy. Ludwig used them on Rockers but they turn up on other cheaper drums.

https://www.interstatemusic.com/34438-Cannon-Percussion-UPCL-Bass-Drum-Claws-10-Pack-UPCL.aspx?sku=PA884&source=Google+Base_CASCIO&source=Google+Base_Cascio&utm_source=google&utm_medium=product&utm_campaign=gbase&gclid=EAIaIQobChMI84Tr9ar82QIVCZ7ACh2-cwouEAQYAiABEgIkxvD_BwE

The captive nuts are used on equipment racks as pointed out above.

I think I've seen those lugs before, but I have no idea who made them. Anybody know for sure?

Mike