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Old July 23rd, 2015   #1
tgsguitar
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Default Master Cylinder Cover Screws

I purchased a 3 Switch Kuryakyn Accessory Switch that mounts ontop of the Brake Master Cylinder. The unit's base screws down
through the Master Cylinder Cover using the factory screwholes. But you require screws about 1/4" longer than the stock ones.

Does anyone know what size/designation the screws are for the Master Cylinder cover so I can try to find one thats a little longer ?

I tried looking it up on the Honda Parts diagrams but all it tells me is a Part # but no sizing !

Thanks for your feedback !
JimC
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Old July 23rd, 2015   #2
PaulRB
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Default Re: Master Cylinder Cover Screws

4 x12 mm Flat Heads.

You will need something in the 4 x 18-20 range to give a 1/4 inch longer.
You can make them shorter but it is tough making them longer
Anti-seize works wonders when you need to get them out.


Paul

Last edited by PaulRB; July 23rd, 2015 at 05:16 PM.
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Old July 23rd, 2015   #3
tgsguitar
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Default Re: Master Cylinder Cover Screws

Quote:
Originally Posted by PaulRB View Post
4 x12 mm Flat Heads.

You will need something in the 4 x 18-20 range to give a 1/4 inch longer.
You can make them shorter but it is tough making them longer
Anti-seize works wonders when you need to get them out.


Paul
Paul, thanks a million, much appreciated !

JimC
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Old July 24th, 2015   #4
chaissos
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Default Re: Master Cylinder Cover Screws

Mine came with the screws. Yours probably should have, too. Check the paperwork, and just go back and say they weren't included.
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Old August 2nd, 2015   #5
JZH
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Default Re: Master Cylinder Cover Screws

Honda Parts Diagrams often include the dimensions of fasteners in the part descriptions, but not always. Sometimes the part number itself contains the length information.

Some examples I found the other day:

96600 Honda fasteners are socket cap screws
96300 Honda fasteners are flange bolts
96000 Honda fasteners are small head flange screws
93600 Honda fasteners are countersunk (flat head) screws

The last digit in a Honda fastener part number relates to the finish:

0 = zinc plated (also no digits = zinc)
7 = black
8 = gold
4 = stainless?

Btw, the OEM screw dimensions are included in the version of the ST1300 Honda Parts Catalog I have:

SCREW, FLAT (4X12) ................................ 3 -------- -------- AC 2 93600-04012-0G

You can see that the second section of the part number corresponds to M4 x 12mm. Just some stuff to think about on a rainy day!

Ciao,
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Old August 2nd, 2015   #6
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Default Re: Master Cylinder Cover Screws

Thanks, JZH.
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