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Shimano Ultegra FC-6600 Crank Arm Fixing Bolt - Y1G311000

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Questions & Answers (2) Q & A
For use with Shimano Ultegra FC-6600 10spd Double Chainsets.

This Crank Arm Fixing Bolt can also be used on the following chainsets:

- Shimano Ultegra FC-6650-S
- Shimano Ultegra FC-6603-A
- Shimano Ultegra FC-6603
- Shimano Ultegra FC-6600-A
- Shimano 105 FC-5650
- Shimano 105 FC-5603
- Shimano 105 FC-5600
- Shimano FC-R700

These are an "A" match which indicates that the parts are the same in materials, appearance, finish & size etc.

If the correct Crank Arm Fixing Bolt is unavailable you can also use the Bolt from the following chainset:

- Shimano FC-R600

This is a "B" match which indicates that the parts are usable, but differ in materials, appearance, finish & size etc.

Genuine Shimano replacement part.
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Questions & Answers (2)
Does It Fit For Ultegra Fc6600 ? What Is The Diameter Of The Bolt ?
09 Feb 2016
I bought one M20 size from another source but turned out to be larger than it is supposed to be.
SJS Customer Service:

This is indeed the correct crank bolt for use with your FC-6600 Ultegra chainset. The diameter of the bolt is 15mm.

Can You Tell Me If This Will Work With Ultegra Sl 6601?
09 Jun 2015
Can you link me to 1 that will work with ultegra sl 6601 please?
SJS Customer Service:

This bolt has the wrong sized thread to fit the FC-6601 chainset, the correct bolt you need is SJSC part 14614.