Thread: Followed Me Home II

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Originally Posted by NTFDAY

Maybe I'm just anal about things not staying put, but have you considered putting Nylock nuts on the screws and then cutting them to length?

Still in the fabrication stage, Ken. The tabs are threaded 1/4-20, but putting a nylock nut on the bottom might be good insurance. Cannot do that up front, as the bolts protrude into the frame space, too far back to reach....

Good progress again Roger. You're making it look easy.. LOL..

A bit o' LocTite, maybe?

Nice fabricated tabs Roger. They came out very nicely. Maybe some round headed nuts on bottom with a squirt of permatex on the thread?

Or one of these clever little nuts

I sure do like using Riv Nuts on cars, Marson makes a real nice kit that isn't too expensive!!!!

Originally Posted by stovens

Nice fabricated tabs Roger. They came out very nicely. Maybe some round headed nuts on bottom with a squirt of permatex on the thread?

Originally Posted by stovens

Or one of these clever little nuts

Originally Posted by Dave Severson

I sure do like using Riv Nuts on cars, Marson makes a real nice kit that isn't too expensive!!!!

Just to be clear, the tabs are 3/16" steel plate, threaded 1/4-20, so I think that a lock washer or star washer under the button heads will likely hold just fine, but a dab of blue lock tite would be good insurance. Frame rail is also tapped 1/4-20, and even though it's nominal 1/8" I think it'll hold those hood latches just fine.

Very much nicer line and brackets are super.

Roger I definately agree, I was just thinking those threaded inserts(Riv nuts come in all sizes and would give you a cleaner profile look on the bracket. I'm sure whatever you do it will function well and look nice.

General rule of thumb----one and half times fastener diameter for depth of threads--------1/4 bolt should have 3/8 inch of threads------a round headed nut on the bottom would be a nice detailing touche'--- for the front ones going just into the frame material, riv-nuts or a welded in plug---------

Originally Posted by jerry clayton

General rule of thumb----one and half times fastener diameter for depth of threads--------1/4 bolt should have 3/8 inch of threads------a round headed nut on the bottom would be a nice detailing touche'--- for the front ones going just into the frame material, riv-nuts or a welded in plug---------

That's a very conservative rule of thumb. Consider that the 1/4-20 nuts measure 0.22" tall, they provide 4.4 threads at 20/inch. Your rule of thumb would make a NC nut for a 1/4" bolt 3/8" tall with 7.5 threads, and a nut for a 1/2" bolt 3/4" tall, and they're actually more like 0.43 with 5.6 threads. I learned that materials play a big part in the minimum thread count. My frame rail measures 0.15", so I've got three full threads on a static, non rotational piece with no significant vibration concerns. Like I said, I'm confident that three threads will hold just fine with a lock washer, and maybe a dab of lock tite for insurance. If the latch falls off then my hood will flap in the wind a bit, and you can say "I told you so."

I agree with you Roger about the threads holding those front clips in place and I personally would only have the stainless dome head nuts on the rear ones for a finished look only. Those bonnet clips are spring loaded and are only to stop the bonnet sides flapping in the breeze with the complete bonnet is attached properly to the car so shouldn't be a hell of lot stress on them. Looking good too with a fully covered engine bay.

Whew... and this is all for mock-up!

check post #13 for general stuff




Thread depth recommendations, online??

Originally Posted by jerry clayton

check post #13 for general stuff

Thread depth recommendations, online??

What a JOKE!! Just say you're wrong, and move on.