screw size

Hi, When it comes to well known international brands, the Head Unit package contains the required screws meant for the Rear DIN install. That's how my Pioneer HU came with, several years ago. Now I plan to install a HU by a brand locally made in my country, but the thing is poor customer...

Help! I tried JL's site and a few reddit posts and what not. What is the exact replacement size for the set screw of the speaker terminal for JD1000/1. I found M4x9mm in one post, but this was for their Slash series. Not entire sure. Amp is not with me at this moment and I'm trying to order...