Toyota Lexus SC wheel bolt & nut sizes
The Toyota Lexus SC (1996 on) uses M12x1.5 wheel fixings with a flat seat and a 21mm hex. It has 5 per wheel, so a full set is 20. Check the table below for the exact fixing for your year and wheel type.
Last updated 2 October 2026
Thread
M12x1.5
Seat
flat
Hex size
21mm hex
Strength
Class 8
Sizes by year and wheel type
| Image | Model code | Wheel type | Thread | Length | Seat | Hex size | Finish | Strength |
|---|---|---|---|---|---|---|---|---|
| Aug 1996 on 5 per wheel | ||||||||
| SC430 | Alloy Wheels | M12x1.5 | – | Flat | 21mm hex | Chrome | Class 8 |
| 1997 on 5 per wheel | ||||||||
|
| SC300-400-430 | Alloy Wheels | M12x1.5 | – | Flat | 21mm hex | Chrome | Class 8 |
A dash in the length column means no length is listed for that fixing. Not sure which wheels you have? Steel wheels usually have a plastic trim cover over them.
Locking wheel keys for the Toyota Lexus SC
Lost or damaged your locking wheel key? Find a replacement for your Toyota.
Common questions
What size are Toyota Lexus SC wheel bolts?
Toyota Lexus SC wheel fixings are M12x1.5 with a flat seat and a 21mm hex.
How many wheel bolts does a Toyota Lexus SC need?
5 per wheel, so 20 for a full set of four wheels.