Fastener story

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.


M3 thread pitch:0.6

M4 thread pitch:0.75

M5 thread pitch:0.9


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