Amazing Japan Fastener
Have you ever seen this dot on Phillips machine screws?
What’s this?
As a Japanese fastener person, we see this dot everyday if you live in Japan.
If you have the knowledge of Japan Fastener history, you might see thread pitch as below.
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M3 thread pitch:0.6
M4 thread pitch:0.75
M5 thread pitch:0.9
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Japan had own industrial standard called old JIS.
Above thread pitch is on old JIS and the dot on Phillips screws mean
*This screw’s pitch is according to ISO standard = new JIS*
This dot is the identification mark of ISO pitch.
In case you need old JIS pitch screws, ask us.
We can supply some sizes from ready stock.
【Writer】Tak Saima/CEO, Technical Sales