I found a source of the M6 screws that are like the ones you find all over the S30:

Steel Class 8.8 Zinc JIS B 1187 - metric-threaded.com

They range from 10 to 30mm in length. I think you need some of the yellow ones for some engine parts:

Metric JIS Phillips Indented Hex Head SEMS Screws

Would these work, or should we Keep looking? What's the 'SEMS' mean?

Edited March 24, 201313 yr by TomoHawk

I found a source of the M6 screws that are like the ones you find all over the S30:

Steel Class 8.8 Zinc JIS B 1187 - metric-threaded.com

They range from 10 to 30mm in length. I think you need some of the yellow ones for some engine parts:

Metric JIS Phillips Indented Hex Head SEMS Screws

Would these work, or should we Keep looking? What's the 'SEMS' mean?

A screw and washer assembly. Glossary of Terminology Related to Nuts and Bolts