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757CA74E-8DE8-4AA5-BAFC-5CB9375CF951.jpeg

What kinda bolt is this?
 

hman442

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Have you tried 12 point socket on it yet?
 

SBMech

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It's called a posi-drive. Anti-tamper proof bullshit.

That would be the inverted or female version of it. Also known as a square drive or fluted drive, can be various types. Significantly different from a Torx.

Drive Types.jpg


Could also be a Zyklop.



https://www.amazon.com/Wera-0500388...75-b066-a70c9103b6d6&pd_rd_i=B075848TRP&psc=1

What exactly are you trying to do? That bolt is special for a reason, DO NOT SPLIT THE CALIPER FOR ANY REASON.

That is not the removal bolt.
 
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OLDRAAT

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yep, security or anti-tamper as stated.
 

lbhsbz

Putting on the brakes
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TimeBandit

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Am I seeing an electronic parking brake connector in this picture?

Why do you want to remove that bolt?? brake pad change??

It sorta looks like a motorcycle.

I have not taken a caliper apart in years, I leave that up to @lbhsbz !
 

lbhsbz

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Am I seeing an electronic parking brake connector in this picture?

Why do you want to remove that bolt?? brake pad change??

It sorta looks like a motorcycle.

I have not taken a caliper apart in years, I leave that up to @lbhsbz !
Pad wear sensor
 

OCMerrill

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Removal is only required if you go 110% on the reactor, which is possible but not recommended.
 

Ziggy

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Handed out multiples of these in my parts department days, never knew what they were officially called, other than caliper bolts.🙂
 
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