what screws should I use

[Based]

I have 4 OA 15s and a box. What screws do I use. Do I pre drill or no. How big should my screws be how big should my drill bit be if I need to pre drill.

Click to read more...

 

[thatguy12 10+ year member]

Always predrill. Drill bit should be a little smaller than the screw

 

[brian84corvette 10+ year member]

if you were to measure the size of a hole your threaded screws will just barely pass thru - your pre drill bit should be half of that size.

its super important to pre drill - but i see alot of people mess up by drilling the hole too large for the thickness of screw they plan to use.

ive had a 18" subwoofer snap the heads off two of the regular corse 1 5/8" drywall screws i normaly use to mount subs.

but that was only one time - and ive used them with much sucess in the past 8 years...

 

[GLN305 10+ year member]

Go to Home Depot and look for Spax screws. They have specific screws for MDF that pre-drill and countersink themselves. For the sub itself, use t-nuts and machine screws. Drywall screws are a bit brittle for holding large subwoofers.