JIS screws
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- honda305.com Member
- Posts: 42
- Joined: Mon Dec 04, 2017 5:27 pm
- Location: Ontario Canada
JIS screws
I am looking at case screws and am told that they are JIS. I have been restoring Kawasaki triples for years and can get stainless case bolt sets easily. In looking at bolt suppliers on the web, they show JIS as being a different sized head but with standard M threads. Is this correct? Can I use M threads maybe with hex heads?
- Tim Allman
- honda305.com Member
- Posts: 503
- Joined: Tue Dec 02, 2014 9:25 am
- Location: Guelph, Ontario, Canada
The change to ISO happened in the late 60s. Several screw sizes were affected but not the 6 mm ones because the two standards are essentially the same. So, any current 6 mm screws will work.jkv357 wrote:I believe there was a time that Honda used JIS screws with a now non-standard thread pitch, so depending on the year an original 6mm JIS screw may not match a current M6's pitch.
Anyone know anything about that?
I tackled the whole JIS issue some years ago. Further discussions here
https://fourwheelforum.com/showthread.php?t=1924
https://fourwheelforum.com/showthread.php?t=1924