It's an Allen screw. Take the one you have to your local hardware and find a match for it. While you're there, you can pick up an Allen Key/wrench to install it!

Common part, don't worry. Shouldn't be hard to find.

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If the threads are shot, you'll have to re-tap the hole for the next size up Allen screw.

John

The first part is called a "roll pin" and is a common hardware store part. They are tapered on the ends to facilitate lining up to the hole. When reinstalling make sure to hold the weight down on a hard surface like the anvil of a vise when driving the pin in. The second problem will either be remedied by rethreading to a larger size and using a larger thread T handle screw or redrilling and using a thread -restoring insert like a heli-coil. I'd use the heli-coil because it's MUCH harder than the pot-metal part and will never strip again.

The fastener you are looking for is called a roll pin, and my local hardware store carries them. A good full-line hardware store should have them.

You install it using a small punch (just smaller than the hole), which you can also get at the hardware store.

I usually just bring the piece to the hardware store so that I can fit the correct fastener without having to guess.

As for the base of the stand, are you sure that you have the correct size screw? Some are metric, some are english, etc.

If you are sure that you have the right screw, and it is stripped out, one option is to drill it and tap it to the next larger size. Again, the tools for this are at the hardware store, or you might get a local machine shop to take care of it for you.

Thanks for the replies!

The bottom pic looks like a Tama stand. I had that happen to a Tama stand, but never fixed it. I used it without a screw and it worked until I got another. Sometimes silicone tape, or pipe thread tape wrapped around the screw threads works.

I hate repairing stripped threads; it might be easier and less trouble to just buy another stand. Used ones are fairly inexpensive.

Purchase a heli-coil set to replace thread size 8mm x 1.25 for your Tama stand. This is a relatively easy repair. If you lack the experience doing it anyone with amateur machine shop skills can be found to assist you.

If you have the original wingnut you must inspect it for any residue clogging the threads, and/or use a 8mm x 1.25mm hex die to correct the threading to its original specs before inserting it for use. Otherwise you risk stripping out any repaired threads.

I don't recommend actually attempting to re-thread the casting itself to a larger threading, because the hole diameter will first have to be enlarged to accept a very ugly 3/8" diameter wingscrew and that will greatly detract from the appearance.

As for the roll pins, some can be easily gripped and removed. Others are counter sunk and if they can't be knocked out through the other side using a pin punch (meaning there's only one insertion opening as opposed to a channel transversing the entire tubing) the only option is to attempt drilling them out, which can be a quite daunting proposition.