Up for sale here is this NOS vintage Dual pivot screw for the tonearm. This is either part 201024 or 201025. This is new in the package and is guaranteed to work great for you. If the part number matches the part number in the service manual (which you can find free online), then this is the part for you. This came from a closed repair shop and is in good usable condition. It is not mint, however; there is a little bit of rust on the screw threads that won't affect operation, and the chrome has a tiny bit of pitting/wear. The paper bag is pictured but is not included.
All of my Dual parts are listed, and can be found by searching my other listings for "Dual." If you don't see it listed, I don't have it. Unfortunately I am not a turntable expert and can't provide any tech support for these.
US shipping and handling is $6, and international is $20, no matter what quantity you buy. All my small parts are set up for combined shipping, so just use the "add to cart" feature and then check out all at once, and it will combine shipping. If you have any questions, please ask.
I have many more Dual parts and other vintage electronics listed--feel free to take a look!