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Author Topic: Is there a doc that lists all the suffixes Honda uses?  (Read 846 times)

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Offline Deltarider

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Is there a doc that lists all the suffixes Honda uses?
« on: October 06, 2020, 04:36:04 AM »
Is there a doc that lists all the suffixes Honda uses to specify the material of parts? I know some, but would like to learn more.
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Offline Deltarider

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Re: Is there a doc that lists all the suffixes Honda uses?
« Reply #1 on: October 07, 2020, 12:07:05 AM »
Reason I asked. To fasten the headers, from the CB550F2 and CB550K3 on, Honda applied flange nuts instead of the simple nuts and springwashers. What are these flange nuts made of? Stainless steel? The head has 8 of them in front for the headers and 8 to fasten the intake manifolds. Why the difference in parts numbers: 94050-06000 and 94050-06080 resp.?
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Offline bryanj

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Re: Is there a doc that lists all the suffixes Honda uses?
« Reply #2 on: October 07, 2020, 12:59:23 AM »
Nothing on the 550 is stainless, difference is probably coating. I just buy 6mm flang nuts
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Online Jerry Rxman Griffin aka MuthaF'er

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Re: Is there a doc that lists all the suffixes Honda uses?
« Reply #3 on: October 07, 2020, 10:31:55 AM »
Quote from: Deltarider on October 07, 2020, 12:07:05 AM
Reason I asked. To fasten the headers, from the CB550F2 and CB550K3 on, Honda applied flange nuts instead of the simple nuts and springwashers. What are these flange nuts made of? Stainless steel? The head has 8 of them in front for the headers and 8 to fasten the intake manifolds. Why the difference in parts numbers: 94050-06000 and 94050-06080 resp.?

06080 = 6mm X 80mm perhaps the 06000 is 6 X 100mm?
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Offline Deltarider

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Re: Is there a doc that lists all the suffixes Honda uses?
« Reply #4 on: October 07, 2020, 11:56:29 AM »
Doesn't make sense when it's about nuts.
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Re: Is there a doc that lists all the suffixes Honda uses?
« Reply #5 on: October 07, 2020, 08:06:39 PM »
good point.  ;) I obviously did not look up these items.  :o That's kinda how it works for bolts anyway
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Offline david 750f

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Re: Is there a doc that lists all the suffixes Honda uses?
« Reply #6 on: October 10, 2020, 09:10:21 PM »
From an old post. I think it is in the FAQ’s..

Honda’s finish codes for motorcycle fasteners

Restorers often ask me about what was the original finish on a bike’s various metal parts. The end suffix code on the part number indicates the kind of material and how it was finished. There are duplicate finish treatments with two different codes, but I don’t know the reason behind that, to date.

CODE SUFFIX 1st digit MATERIAL
0=High Carbon Steel
1=Carbon Steel
3=Brass
4=Stainless

CODE SUFFIX 2nd digit SURFACE TREATMENT
A= Zinc Plate (White)
0= Zinc Plate (White)
B= Chrome Plate
2= Chrome Plate
C= Nickel Plate
3= Nickel Plate
H= Zinc Plate (Yellow)
8= Zinc Plate (Yellow)
J= Untreated
9=Untreated
G=Black
7=Black

This research started when a question came to me about what are the differences between these 5x25mm bolts listed by part number below.

93500-05025-1H Carbon Steel, Zinc (Yellow)
93500-05025-0A High Carbon Steel, Chrome
93500-05025-0G High Carbon Steel, Black
93500-05025-4J Stainless, Untreated
93500-05025-0B High Carbon Steel, Chrome
93500-05025-0H High Carbon Steel, Zinc (Yellow)
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Offline Deltarider

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Re: Is there a doc that lists all the suffixes Honda uses?
« Reply #7 on: October 11, 2020, 01:53:51 AM »
Thanks a lot, David!
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