What Bolts And Hardware Do I Need To Install DA75 Demco Brake Actuator DM33CV

Updated 08/15/2025 | Published 07/21/2025

Question:

What size bolts do I need for mounting this to my trailer tongue? does it include the bolts?

asked by: Dan

Expert Reply:

Dan, you’ll want to use 1/2" x 4-1/2" Grade-5 or higher for a secure mount. They aren't included, but you can find them at any hardware store.

The mounting holes on the Demco DA75 Brake Actuator # DM33CV are standard size for bolt-on installs, and torque to spec per the included instructions, which I've also attached here for you. The torque specs for these bolts are 75 ft lbs.

expert reply by: Andrew N

grade 5 torque
(click to enlarge)

Andrew N.

8/15/2025

Hey Dan, did you manage to get the right bolts and mount the brake actuator securely? I'm curious to know how it worked out for you, as it could help others in a similar situation.