overall rotor diamater
297mm

outboard hat face to outboard rotor face depth
30mm

hat diamater
157mm

hub bore diamater (size of the hole that center the rotor on the hub)
57mm

hat depth (thickness of metal)
7mm

rotor and hat depth (thickness from backside of rotor to hub mounting face of hat)
57mm

disc thickness (two friction disks separated by the 13mm thick vanes make the overall rotor thickness)
7mm

overall rotor thickness
27mm


I know my description is kinda confusing, I'll provide an illustration when I get back from travel next week.

BTW- The SVX, 300ZX and almost all other cars on the road today share a bolt circle of 5x114.3mm. This size was made so popular by the Japanese in the 70's and 80's that American and European automakers simply followed suit. As a rule of thumb, any passenger car you come across with 5 lugs will have this bolt pattern.