OCC wrench

A two-pound dead-blow hammer, often mistaken for a rubber mallet. The primary tool of the hacks at Orange County Choppers, especially Paulie. Chiefly used for axle installation, engine/transmission alignment and primary cover installation.

Properly used, an OCC wrench is a useful tool that one occasionally needs for stubborn, rusty old parts, not shiny new ones that should slide together if one knows what they are doing.

I have been a motorcycle mechanic for ten years, and have never needed the OCC wrench to put in an axle.

Look, that idiot Paulie dinged that primary with the OCC wrench!

by Dr. Badwrench February 23, 2008

Occ

Very good roblox and Scrap II Player.

Look, it's Occ!
Dang bro, he's just too good, we need to leave man.

by Occ, FilipPL March 1, 2022

OCC.

noun
the action or fact of occupying a place.
"the house is finally ready for occupancy"

"My occ. in Call the Car it's above 85%. That's impressive"

by Blackmamba653165498 November 19, 2021

OCC

One contact capable

Military slang for a civilian/reservist who seriously trains with a rifle that uses a cartridge that is not readily available by the war

"Yo guys look at that OCC, mags dry and useless after first contact"

by crazyfeather June 26, 2025

OCC

One contact capable

Military slang for a civilian/reservist who seriously trains with a rifle that uses a cartridge that is not readily available by the war time supply chain, and has three mags in a micro-rig.

"Yo guys look at that OCC, mags dry and useless after first contact"

by crazyfeather June 24, 2025