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500 cylinder head nuts ?

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McCabe-Thiele (Ted):
Currently sorting out my boxes of various fasteners from when I removed my cylinder head & top covers. Most of my covers had SS Hex head bolts fitted previously.

In a box I marked Cylinder Head Nuts I have 8 flanged flat face M8 nuts, 2 of M8 chrome domed nuts, 4 of SS M8 nuts, 12 of M8 flat washers.

The manual shows 12 of M8 flat faced flanged nuts (90236-300-000) so the SS nuts were probably a substitute for 4 missing ones - not sure where the domed nuts go as I can't see them in the parts book.

The DS price for the flanged nuts is £2.88  each, looking at alternative nuts on e-bay  it appears some M8 nuts have a larger diameter flange so probably would not fit in the recess.

Are there more sensibly priced nuts available that are suitable to replace the originals ?

Lastly the 6 rubber caps that are glued in place - what is the best adhesive to use for these please ?

Trigger:
They should be high tensile steel nuts with a thick washer under them have loads of them on my stock list.
You stick the rubbers head sealing pucks down with a smear of honda bond on the rim of the rubber to the underside only  ;)

McCabe-Thiele (Ted):

--- Quote from: Trigger on August 20, 2023, 05:25:58 PM ---They should be high tensile steel nuts with a thick washer under them have loads of them on my stock list.
You stick the rubbers head sealing pucks down with a smear of honda bond on the rim of the rubber to the underside only  ;)

--- End quote ---
The parts manual picture shows flanged nuts plus washer, although the description makes no mention of the nuts being flanged.

DS show it as a flanged nut.

Trigger:
90236-300-000 is a CB750 part which why would it say its flanged. It is used on many Honda head studs  :o



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Bryanj:
I suspect the owner before me put the stainless domed nuts on the outside 4 studs for appearance sake, i know there were a lot of stainless cap screws visible
The nuts should be flanged as Trigger said but not the serated type flange that is common to get only flat flange.

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