Look them up on partzilla then;
For a Part Number in the format XXXXX-XXXXX-XX
All these parts are Hardware (fasteners), they all start with a '9' and end in '00'.
The second and third digits tells us what type of fastener:
0 - 'various'
1 - bolts, cotter pins
2 - screws, nuts
3 - oil seals, O-rings, bearings
4 - spark plugs
5 - bolts, nuts
6 - ISO bolts
7 - ISO screws and nuts
The fourth and fifth digits tell us what material/surface finish (e.g. chromed).
Digits six and seven give the diameter (inner or outer) e.g. 08 would be an M8 size.
Digits eight, nine and ten are the length (except for '901' bolts for some reason)
There are also standard fastener types...e.g.
90105-XXXXX are Washer based bolts
90116-XXXXX are Studs
90401-XXXXX are Union bolts