Is my box leaking?

[ear2ear]

The ones I get from McMaster Carr get installed with an allen wrench / pack / socket.

You can get them with or without flanges, different threads, different lengths.

A bag of 50 was only 9 bux.

[wellington]

Looks like you would have to get the exact length in the bolt you would use?

t-nuts are a little easier since you can use any length.

Well I use some of that sealant on the t-nuts and I'm letting them sit.

Hopefully this will be good enough.

oh yeah and I sanded all the screw holes down on the top, so they are all flat now. that should also help

upload picture

[Captain Stupid]

You can use any length with inserts also if you just wanna drill the hole all the way through. Only difference is that the threads are in the center of your hole instead of at the bottom. With an insert you could also run a long bolt straight through it like in your pics.

[ear2ear]

I hope they hold for you.

You can use any length bolts for the inserts - they pass right through.

[wellington]

I hope they hold too

I didn't know that about inserts.

I still prefer the bolt grabbing the entire half inch of wood rather than just the middle of the wood. Seems like the t-nuts would have more holding power.

[Captain Stupid]

I hope they hold too

I didn't know that about inserts.

I still prefer the bolt grabbing the entire half inch of wood rather than just the middle of the wood. Seems like the t-nuts would have more holding power.

Yes, t-nuts do have more holding strength over standard inserts because they are shouldered. I'll give you that. But if you use the style that ear2ear posted pictures of above, those also have shoulders and could be installed from the bottom just like a t-nut, giving you the same pull-through strength.

[ear2ear]

I hope they hold too

I didn't know that about inserts.

I still prefer the bolt grabbing the entire half inch of wood rather than just the middle of the wood. Seems like the t-nuts would have more holding power.

I hope they hold too

I didn't know that about inserts.

I still prefer the bolt grabbing the entire half inch of wood rather than just the middle of the wood. Seems like the t-nuts would have more holding power.

Yes, t-nuts do have more holding strength over standard inserts because they are shouldered. I'll give you that. But if you use the style that ear2ear posted pictures of above, those also have shoulders and could be installed from the bottom just like a t-nut, giving you the same pull-through strength.

...and I just measured one of them.

They are .795" long and the hex (unthreaded) portion is .175" deep.

That's .62" of threads.

I drove them in from the back of my baffle and they actually poke through. They have shorter ones though.