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Replacement B tension screw for Shimano Dura Ace rear derailleur circa 2005

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Replacement B tension screw for Shimano Dura Ace rear derailleur circa 2005

Old 06-21-15, 10:18 AM
  #1  
nemont
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Replacement B tension screw for Shimano Dura Ace rear derailleur circa 2005

Does anyone know where I can get a replacement B tension screw for a 2005 Shimano Dura Ace rear derailleur?
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Old 06-21-15, 10:35 AM
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deacon mark
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Take the bike to a local ace hardware and then start trying the best screw to make it work. Eventually you will find one and it will be dirt cheap.
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Old 06-21-15, 12:39 PM
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Originally Posted by deacon mark View Post
Take the bike to a local ace hardware and then start trying the best screw to make it work. Eventually you will find one and it will be dirt cheap.
+1, though it's easier to remove the other one, and just bring that for a match. Match it first by looking for a nut, then use the nut to find a screw.

It's harder to find stainless steel metric screws, so you might have to settle for a black one. But once you know exactly what you need you can hunt for a stainless one on the net.

OR

Go to a bike shop where you have a relationship. They all have decent numbers of trashed derailleurs (some shops save them, some don't) where a replacement limit can be salvaged.
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Old 06-21-15, 01:31 PM
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Is there anything special about the ones used on ca. 2005 DA RDs? I have a couple extra Shimano B-tension screws that I'm not using.
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Old 06-22-15, 08:26 AM
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I'm guessing that Shimano uses a standard B-tension screw for all of their RDs. I'm going to check out a couple of my kids old bikes that they've abandoned to see if I can find a screw that will work. Thanks for the idea and the offer. I'll let you know.
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Old 06-22-15, 08:56 AM
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It's an M4 x 12 screw according to the tech docs, so just buy one of these if you don't mind not getting an OEM part (Y-53M-21000)
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Old 06-22-15, 12:16 PM
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Just steal one from a busted RD.
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Old 06-22-15, 12:31 PM
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Ace has a stainless section, and you can pick whatever length you want... even choice of head type.
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Old 06-22-15, 01:16 PM
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Ooh, how cool would it be to be the only kid on the block to have a torx head B-screw?






Answer: not especially
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Old 06-22-15, 02:16 PM
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Originally Posted by RubeRad View Post
Ooh, how cool would it be to be the only kid on the block to have a torx head B-screw?






Answer: not especially
It would certainly make it harder for roaming hooligans to mess with your B-tension adjustments. Hate it when that happens.
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