a hex bolt is bolt having six face head operated by spanner. an allen bolt is bolt having a six face groove in the head and operated by a special type of L shape key called allen key.
Torx or Allen wrenches get more torque (pressure) on the bolt.
8mm
Type and year of car would help.
1. A shaft diameter 2. Length of bolt 3. Inside of a hub
What is hard? Take off the wheel, remove the Allen bolts holding the caliper and proceed like any other car. I think the trouble is that people see the round headed bolts that mount the caliper and think they are part of the stub axle assembly. They assume that they cannot be removed . They are Allen bolts or hexagonal drive bolts, they are rotated via an inset hexagonal recess on the top of the bolt. They are actually torx bolts and not allen keys.
What size Allen socket is needed to remove bolt from caliper on 2004 ford escape
A 3/8" Allen wrench will remove that bolt on the front caliper.
It takes a 3/8" allen wrench to r & r that caliper bolt.
On the back of the caliper there should be a bolt its a 14mm you take it out and inside there is a bolt also its Allen key you use and Allen key and retract the caliper. it works on all 626 from 1994 till 2002
3/8" Allen
It takes a 7mm allen wrench.
It's either a 12 or 15mm bolt, not Allen key.
7 mm Allen wrench
9mm Allen, hard to find. take 3/8 Allen and grind it down
probably 3/8"
3/8ths