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Latest Registry Entry
1965 Honda CP77 — Ulsan Metro City, Rep. Korea
Restored with original parts — Owner: J. Doe

J.I.S.

Fuel System: Gas (Petrol) tanks, Carburators
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versuspop
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Post by versuspop » Wed Apr 21, 2010 6:54 am

"Old pitch" = JIS?
brewsky wrote:The parts book says 6x25, but hat is not correct on my tank.
The 6mm threads didn't change pitch anyway...only 3, 4, 5, and 12 mm.
My guess is 5mm with old pitch, the 6mm will not even start in the holes on mine.
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versuspop
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Post by versuspop » Wed Apr 21, 2010 6:55 am

versuspop wrote:"Old pitch" = JIS?
brewsky wrote:The parts book says 6x25, but hat is not correct on my tank.
The 6mm threads didn't change pitch anyway...only 3, 4, 5, and 12 mm.
My guess is 5mm with old pitch, the 6mm will not even start in the holes on mine.
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brewsky
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Post by brewsky » Wed Apr 21, 2010 8:06 am

Its a little confusing, since there are "new" or current JIS standards also.
The "new" JIS are sometimes referred to as ISO or "modified JIS"
I was referring to the old original JIS standard thread pitch.
66 dream, 78 cb750k, 02fz1, 09 wing
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versuspop
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Post by versuspop » Wed Apr 21, 2010 9:27 am

thanks... think i found what i need at western hills honda.
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gramey7
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Post by gramey7 » Wed Apr 21, 2010 9:44 am

If you are buying Honda part number screws from Western Hills Honda, make sure they do NOT have a "-0A" suffix; those are the "new" JIS/ISO threads, not the original JIS threads.
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versuspop
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Post by versuspop » Mon Apr 26, 2010 7:41 am

They are not. I had to buy screws with a 30 length rather than a 25, but a little extra screw sticking up into the tank isn't hurting anyone. I think the part number was 93500-03050.
gramey7 wrote:If you are buying Honda part number screws from Western Hills Honda, make sure they do NOT have a "-0A" suffix; those are the "new" JIS/ISO threads, not the original JIS threads.
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LOUD MOUSE
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Post by LOUD MOUSE » Mon Apr 26, 2010 9:19 am

Did ya get the screws yet?. ..........lm

versuspop wrote:They are not. I had to buy screws with a 30 length rather than a 25, but a little extra screw sticking up into the tank isn't hurting anyone. I think the part number was 93500-03050.
gramey7 wrote:If you are buying Honda part number screws from Western Hills Honda, make sure they do NOT have a "-0A" suffix; those are the "new" JIS/ISO threads, not the original JIS threads.
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