ステンレス 六角穴付きボルト  - Stainless Six Pan Bolt
 
Made of stainless steel A2-70 grade, high hardness and corrosion resistance. Can be used in humid environments, and do not worry about rust. Perfect for an engine case restoration. The bolt head has stripes, this is standard in Japan and difficult to find in Europe.
 
These are expensive but will last forever without rusting.
 
Two colors are proposed:
- Raw stainless steel without any coating. This is shiny gray.
- Black, which has a beautiful matte and uniform aspect. The aspect is given by a coloring method that blackens stainless steel with a special blackish chemical, and it can also be called "black dyeing" for stainless steel.
Japanese vintage motorcycles, JIS screw, small head nut, small head bolt, pan head screw, honda, Kawasaki, Yamaha, Suzuki, Kawasaki 900 Z1, honda 750 CB K, Yamaha 350 rd, Suzuki 750 gt, zinc, stainless, acorn nut, black zinc, Japanese industrial standard, JIS screwdriver, engine bolt, flange bolt