Which type of fastening method is allowed for the mounting of the brake caliper?

1. Round head bolt metric grade 10.9 with prevailing torque lock nut
2. Allen bolt metric grade 10.9 with any lon lock nut
3. Allen bolt metric grade 10.9 bolt with a self locking helicoil
4. Allen bolt metric grade 8.8 bolt with any lon locknut
5. Hex headcap bolt metric grade 8.8 with prevailing torque locknutCorrect
6. Hex headcap bolt metric grade 10.9 with Locktite
7. Flat head bolt metric grade 8.8 with lockwire
8. Round head bolt metric grade 8.8 with Loctite