Pre 1967 Former JIS

Japanese pre 1967 Screws Used on Motorcycles Built before 1967.
These screws pitches are also used on a variety of different applications, such as Musical Instruments, Toys, Telescopes and other Motor Vehicles.
Former J.I.S size screws.
M3-0.60mm Pitch
M4-0.75mm Pitch 
M5-0.90mm Pitch

Phil Pan Head- Measure from end of thread to under the head 
Countersunk Head - Measure from end of thread to include the head 
Oval Countersunk Head - Measure from end of thread to top of countersunk but do not include oval section of the screw head.

Screw 3mm Screw Length +0/-1.0mm Thread Pitch 0.60mm Max Head OD 5.5mm

Screw 4mm Screw Length +0/-1.0mm Thread Pitch 0.75mm Max Head OD 7mm

Screw 5mm Screw Length +0/-1.0mm Thread Pitch 0.90mm Max Head OD 9mm