Well I know its not 3/8 tried T-55 T-50 T-60 none worked
A 3/8" Allen wrench will remove that bolt on the front caliper.
70
_________________________________________Front caliper bracket mounting bolt-148 ft-lb Front caliper guide pin bolt-74 ft-lb
The Rear Caliper Bottom Bolt head size is 12 mm. The Top bolt is enclosed only making it a slide bolt therefore you cant and really have no need to remove it. So the only bolt you should remove is the bottom 12mm head bolt. Then there will be a 14mm bolt that will hold the Emergency Brake Cable Bracket to the Caliper. Loosen this bolt and remove the Emergency Brake Cable Bracket from the Caliper. Then pry the bottom of the caliper up off the disc. This will allow you to swing the caliper up then push the caliper back to slide the caliper off the enclosed bolt slide at the top of the caliper. This will allow access to the inside and outside pads to remove them and allow you to press and rotate the Piston (Push and Twist-in Pistons) back into the Caliper with the right Brake Caliper Compression tool. The rear two Caliper Bracket bolt head sizes are 18mm. You must remove the Caliper bracket in order to remove the rear brake disc. The Front Brake Caliper Bolt is a 3/8" Allen head bolt. There will be two bolts holding the front calipers to the Spindle. The Front calipers are standard push-in Pistons.
If memory serves, 18mm. That would be the bracket bolt. The caliper bolt has a 9mm thread.
A 1995 Beretta front brake caliper is not held on by a Torx bolt. Use a 3/8" Hex key.
.The 2000 Chevrolet Monte Carlo brake caliper bolt size is 9/16. The brake caliper bolt can be purchased at most auto-parts stores
Disengage the parking brake before attempting to remove the caliper.
19 mm front 14 rears and 45 for hex key
Either 9mm hex or Torx T-45
Caliper Bracket 80 foot-pound, 19 mm bolt Caliper 37 foot-pound, 14 mm
Remove or disconnect the following:Front wheelsFront brake hose bolt and the copper washers and plug the front brake hose2 front disc brake caliper slide pins, then lift the caliper off of the front caliper anchor plateTo install:Install or connect the following: Front disc brake caliper onto the caliper anchor plate. Install the 2 slide pins. Tighten the slider pins/bolts to 21-26 ft. lbs. (28-36 Nm).Front brake hose to the brake caliper, using new copper washers. Tighten the retaining bolt to 26 ft. lbs. (35 Nm) on Excursion models or 23-29 ft. lbs. (30-40 Nm) on all other modelsBleed the brake system.Clean the wheel hub mounting surface.Install the front wheels and snug the lug nuts to fully seat the wheel against the hub.