part # 90116-08150-00 BOLT,STUD
How to get sizes of bolts from the part numbers...
The Yamaha microfiche shows the bolt size, you just have to know how to read it. Here is how it works...
The part number is broken down into 3 parts 99999-06012-00 is an example. The second part, which is 06012 tells you the size. That bolt is 6mm in diameter and 12mm in length. If the second part was 08024 the bolt would be 8mm in diameter and 24mm in length. The first part of the part number tell what type of part it is such as bolt, screw, washer etc. and last 2 digits generally determines the finish such as black, cad, etc
You can tell by looking at them it's metric coarse thread
from this chart you will see that 8mm coarse is 1.25 pitch
Metric Thread Pitch and Tapping Sizes
Size Pitch (mm) Tapping Diameter (mm) Clearance Holes (mm)
Coarse Fine Coarse Fine Close Medium Coarse
M1.6 0.35 1.25 1.7 1.8 2.0
M2 0.4 1.6 2.2 2.4 2.6
M2.5 0.45 2.05 2.7 2.9 3.1
M3 0.5 2.5 3.2 3.4 3.6
M4 0.7 3.3 4.3 4.5 4.8
M5 0.8 4.2 5.3 5.5 5.8
M6 1.0 5.0 6.4 6.6 7.0
M8 1.25 1.0 6.8 7.0 8.4 9.0 10.0
M10 1.5 1.25 8.5 8.7 10.5 11.0 12.0
M12 1.75 1.25 10.2 10.8 13 14 15
M16 2.0 1.5 14.0 14.5 17.0 18.0 19.0
M20 2.5 1.5 17.5 18.5 21.0 22.0 24.0
M24 3.0 2.0 21.0 22.0 25.0 26.0 28.0
M30 3.5 2.0 26.5 28.0 31.0 33.0 35.0
M36 4.0 3.0 32.0 33.0 37.0 39.0 42.0
So you will need an 8mm by 1.25 nut.
