T Nuts

Helpful hints on how to build 'em, and where to get the stuff you need.
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Tom O'Shea
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T Nuts

#1 Post by Tom O'Shea »

I saw the other day where even Leland was spinning tee nuts on his OT 15 build.

I've switched tee nut suppliers from PE to McFeely's. www.mcfeeleys.com

McFeely's. Heh-heh. Great name. Heh-heh.

They sell some pretty tough tee nuts, with four big-ass spikes instead of six dinky ones. They're made of stouter steel than the PE tee nuts, too.

You CAN still spin them--at least I can--but it's harder. On my current build I'm using 32 tee nuts in two cabs, and I've only spun one. With the PEs, I might have had problems with four, or even six.

But they cost more, and their only thread guage in #10 screw size is 24 TPI. Still, they've reduced cussing time by at least a little bit per cab.

McFeely's also sells pretty good screws. Heh-heh. He said Screws.

Tom O'Shea

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Tim A
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#2 Post by Tim A »

Use a fender washer on a screw and draw the T-nut in, don't tap it. That assures perfect thread allignement when you are ready to put the screw in.

Also, once I get it started I put a dab of poly glue, like Gorilla or the Elmers verion on the shank. It won't come out or spin.

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Art Coates
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Location: Indiana

#3 Post by Art Coates »

Tim Ard wrote:Use a fender washer on a screw and draw the T-nut in, don't tap it. That assures perfect thread allignement when you are ready to put the screw in.

Also, once I get it started I put a dab of poly glue, like Gorilla or the Elmers verion on the shank. It won't come out or spin.
+1

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Harley
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#4 Post by Harley »

Tim Ard wrote:Use a fender washer on a screw and draw the T-nut in, don't tap it. That assures perfect thread allignement when you are ready to put the screw in.

Also, once I get it started I put a dab of poly glue, like Gorilla or the Elmers verion on the shank. It won't come out or spin.
+1

I even have a cut off allen key that I use in my battery drill ( slow speed ) which saves a huge amount of time - real important that glue dab!

I assume by a fender washer you mean what we call a penny washer- obout 1/4" ID and 1-1/2" OD

Harley
ImageSemi-retired: Former Australia and New Zealand Authorised BFM cab builder.

mk_drums
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Location: Australia

#5 Post by mk_drums »

penny washers hey
i wonder if they call them that across the pond here
i needed some fender washers when i was building a drum kit last year and no one knew what they were. the specialist fastener shop even said no we dont have anything like that
i sadly had to end up buying some from the US

Christian
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#6 Post by Christian »

I even have a cut off allen key that I use in my battery drill ( slow speed ) which saves a huge amount of time - real important that glue dab!
I did the exact same thing! In my humble opinion, that is an excellent tip! I hate manually driving anything (other than the GF... :P )

You can even buy allen bit extensions so you can drive the hex head from a distance. This is mandatory for the tighter cabinets; like a T-30. My old drills aren't streamlined enough to reach the screws :oops: But with a home-made driver, everything is peachy!

But yeah, like Tim said, you have to PULL the T-nut in, not hammer it.

We're talking speakers, right...?

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Harley
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#7 Post by Harley »

Christian wrote:
You can even buy allen bit extensions so you can drive the hex head from a distance. ..?
I thought of those bits but they wear out real quick and are damned expensive here. An Allen key costs very little - I buy the long ones and cut about 3 bits out of it with the small grinder ( hacksaw is useless )

One little bit does about 75 teen nuts.

Harley
ImageSemi-retired: Former Australia and New Zealand Authorised BFM cab builder.

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Harley
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#8 Post by Harley »

mk_drums wrote:i needed some fender washers when i was building a drum kit last year and no one knew what they were....
Bet you if you'd gone to one of your traditional hardware stores and asked for a penny washer - they'd have known what you were talking about.

I did some installations of a/c filtering equipment in Oz many moons ago and we obtained penny washers from the local h/ware ( in Sydney )

Harley
ImageSemi-retired: Former Australia and New Zealand Authorised BFM cab builder.

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LelandCrooks
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#9 Post by LelandCrooks »

This is the first time I've had a nut spin since I switched to hurricane nuts from regular tee nuts. I always put a dab of PL on the them, and pull them in just like you all described. I've also switched to hex cap screws, and you get lots more torque than with a phillips screw. I don't have the "feel" for how hard to pull them yet. From now on they get a shot of 5 min epoxy. I also keep a tap handy and hit every one after insertion. with a little practice you can run it in the drill. SLOWLY.
An Allen key costs very little - I buy the long ones and cut about 3 bits out of it with the small grinder ( hacksaw is useless )
I did the exact same thing
Great minds think alike. Hacksaws just polish the shank. Die grinders make pretty short work of it.
If it's too loud, you're even older than me! Like me.
http://www.speakerhardware.com

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Bill Fitzmaurice
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#10 Post by Bill Fitzmaurice »

I find the biggest problem is driving the bolts with a drill, if things are AFU it will strip the nut before you're aware of a problem. I drive the bolts by hand only, and if they feel the least bit hinkey I chase the both the bolt and nut threads.

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Tim A
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#11 Post by Tim A »

Bill Fitzmaurice wrote:I find the biggest problem is driving the bolts with a drill, if things are AFU it will strip the nut before you're aware of a problem. I drive the bolts by hand only, and if they feel the least bit hinkey I chase the both the bolt and nut threads.
I agree. A happy medium is a screw gun with the torque setting on 1 or 2. If it cross threads it'll slip the clutch almost immediately but runs the bolt in fast on a clean thread. Finish up with a hand tool or crank the clutch down.

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Harley
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#12 Post by Harley »

Bill Fitzmaurice wrote:I find the biggest problem is driving the bolts with a drill, if things are AFU it will strip the nut before you're aware of a problem. .
True, but I hand spin the nut up a couple of threads beforehand and you know if you have cross threaded by then. I use a M5 x45mm HT Allen headed screw.

Harley
ImageSemi-retired: Former Australia and New Zealand Authorised BFM cab builder.

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