What Fastener To Use Besides Wood Screws To Hold Some 18"s In Place?

[newls1]

TO make a long story short, My first setup used screws, and they back out of my 3/4MDF. I can get 2-3 "re-tights" out of them, then the hole gets striped. On my second attemps, I decided to walk down my favorite isle in Home Depot, and found these ( http://www.wsusol.com/store/shopexd.asp?id=965 ) I tapped these in on the inside of the box, then used 1/4" 1-1/4 long all thread bolts, and the damn speaker was FINALLY secured in, and STRONG TOO!, I decided yesterday to go and check to see if the bolts loosened up, and only 2 got slightly loose, and got my screw driver, and proceeded to tighten them up, the first one got nice and tight, the second one is now just spining. The teeth on the one T-Nut is no just spining on the inside, so now there is no more way for it to "GRAB" when I tighten the bolt (you know what I mean) out of 8 bolts, 7 are very tight, WILL THIS BE AN ISSUE???

I guess what im asking is this: Does anyone know of a more secure way of holding a speaker down, so I'll never have to go thru this shit again. It isn't easy taking out a 16.04CuFT box with 2 18" BL's in it. This sucker is heavy. Im open for suggestions, and hopefully Home Depot has what ever you recommend. Thanks guys.....

Edited September 28, 2008 by newls1

[AI James]

ive never had a wood screw back out in my life. look for t nuts as i told you months ago if your concerned

[tejcurrent]

Honestly I've never had an issue even with regular wood screws. What sort of bracing do you have inside the box to secure the face the subs are on?

[tacomabanga1986]

that fucker must be slumpin if ur shakein screws out of the box i never had that problem befor, but maby u could put locktite on the threads so they prolly will never come out but u still want it to be able to take out when workin on subs or so

[newls1]

I have 5 runs of 1/2 all thread

[newls1]

ive never had a wood screw back out in my life. look for t nuts as i told you months ago if your concerned

Did you click the link in my thread?

[V1G1LANT3]

I use thread inserts..I don't trust t-nuts anymore.

[ChevyBoy]

quit taking your subs in and out.

[The Performer]

I would stay away from the T-nuts they sell in home depot and lowes. I've used them before on a set of 12's and had the threads strip out of both the T-nuts and the bolts (both bought from home depot)

The trick is to find a bolt specialty shop in your town to get them from. Here we have Ace bolt and screw, that's where I go to get my T-nuts and bolts. They are MUCH better made, and a fraction of the cost. I got about 50 of each for under 10 bucks. At home depot to get enough for two subs you spend about $15 for crap.

T-nuts are great, you just gotta get the good ones. Another trick is if you don't set the nuts into the baffle before hand with the bolts, take a C clamp and set the T-nuts with that. When you just use the screw to tighten it in you take the chance of not having it suck up into the baffle tight enough and over time it can let slack in the bolt for it to come loose.

[Forevrbumpn]

1/4-20" 2" bolts and t-nuts

there are a bunch of styles of t-nuts, some are cheap, some are pretty damn good, way to keep them in place is to epoxy them in place, and wax the bolt, or use vaseline- an old boss taught me that trick, and they will never ever strip once dried

another thing I found out about wood screws striping like that is to much flex on the baffle where the sub is mounted to