Do you have to use the Helicoil specific taps or can you use a generic tap? I have a few threads I would like to repair but not bad enough to spend $50 on taps to do it.
CK5
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helicoil question
- Thread starter ashman
- Start date
ALL helicoil inserts require a special Helicoil tap, and you have to use the correct drill for that tap. You can buy kits that come with the helicoil inserts, tap & drill.
If you mean to install a Heli-coil then YES you must use the heli-coil tap to tap the hole the correct size for the heli-coil. As Rob said there are kits out there that come with Heli-coil tap, installation tool and a package of heli- coils and they're not very expensive depending on the size you need. Also if you're not in a hurry e-bay is your friend for buying these said kits.
do not try to tap a hole that has a heli-coil in it. you will spin the coil out almost every time.
No, I meant taping before putting the coil in.
I'll check out ebay and such. NAPA wanted over $50 for what I'd need (2 different sizes) and that just ain't worth it imo. I'll weld up the holes and redrill before doing that.
What sizes are you needing?
3/8-24 and 5/16... course (don't remember the thread count off hand).
What about these? http://www.ebay.com/sch/i.html?_sacat=0&_from=R40&_nkw=time-sert&_sop=15
I see they've changed them with the flange up top, which apparently requires a counterbore. http://www.timesert.com/html/inchsert.html but that stops them from going too deep.
Shouldn't need anything more for a "driver" than the proper size bolt as far as I can tell.
I see they've changed them with the flange up top, which apparently requires a counterbore. http://www.timesert.com/html/inchsert.html but that stops them from going too deep.
Shouldn't need anything more for a "driver" than the proper size bolt as far as I can tell.
DEMON44
Low-Tech Redneck
I prefer Timeserts over Helicoils, every time.
There must be a downside to them? Not sure why helicoils still exist, it would seem the timesert to be cheaper, easier and stronger. Although with the counterbore now required (and special tap), guess not everyone will have the right tools in their shop.
I remember using them quite a few years ago, but they had slots so you could drive them in with a flat blade, and I am SURE they didn't require a special tap. On their website they say you need "STI" taps, which I'm sure most of us don't have lying around.
I remember using them quite a few years ago, but they had slots so you could drive them in with a flat blade, and I am SURE they didn't require a special tap. On their website they say you need "STI" taps, which I'm sure most of us don't have lying around.
what's a counterbore?
Countersink, I assume there is no difference. They list it on their site as one of the tools that comes with the kit. Theirs might cut just to the right depth, it doesn't look like a regular countersink. As long as the angle of the countersink was right, doubt there would be a reason not to use one as opposed to needing their special one.
Based on these results http://www.ebay.com/sch/i.html?_odk...l1313.TR0.TRC0.Xsti+tap&_nkw=sti+tap&_sacat=0 it seems like helicoils use the same taps.
Based on these results http://www.ebay.com/sch/i.html?_odk...l1313.TR0.TRC0.Xsti+tap&_nkw=sti+tap&_sacat=0 it seems like helicoils use the same taps.
DEMON44
Low-Tech Redneck
Ya I dunno why, people just like choice I guess.
Don't fret about what tools you need. Everything is in the kit. It not a long arduous process, you can literally blast them in. Well I've used lots of them takes me less than 2 minutes to repair a hole with a timesert. With my own power tools.
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Don't fret about what tools you need. Everything is in the kit. It not a long arduous process, you can literally blast them in. Well I've used lots of them takes me less than 2 minutes to repair a hole with a timesert. With my own power tools.
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The timesert requires a special forming tool to install the insert and lock it in place. The forming tool makes the last couple internal threads as it locks the insert into place at the same time. I prefer timesert over heli-colis any day but not everyone is willing to spend the money for the kit.
EZ-Loc are an OK option. You use standard drill bits and taps. They are pretty inexpensive as well.
X2, I was reading through the posts and was going to suggest this.
We use heli-coils, ez-locks and king-serts at work and the ez-locks are my go-to unless there's some special circumstances that require me to use one of the others.
Yep, EZ-lok was what I apparently used back in the day. Nothing special required to install them. As I remember from back then, only real limitation was that they are pretty thick, so the material you are putting them in has to have some meat left.
Any problems with them coming out when you unthread fasteners or anything?
Any problems with them coming out when you unthread fasteners or anything?
That looks like a good option. Using standard drills and taps is a big plus at this point.
Ya know, in all my years of machining, I've never used a Timesert. Known about them for years but never used one. I'm going to have to try one and see how it works. See if I like it for spicific purposes. Keenserts are aerospace industry standard. And Helicoils as well. Threaded many a tapped holes with an STI tap for Helicoils, and tapped many a hole for a Keensert. I know Keenserts work flawlessly. I will be using them in any of my products I make.
Luke, this question is for you. Timeserts thread in to the newly tapped hole using a special tap correct? I've not read any literature on them yet, so I'll just ask you
. Now, if they are a "thread in" style insert, I assume they have some form of "Lock in" feature. At least I hope so. Otherwise they should be bonded in so they do not back out as a fastener is being removed. If thats how they should be installed then me no likey. I don't want to have to wait for a bond to cure before I can install a fastener and go, ya' know. Not to mention if the bond fails.With Keenserts, you thread them in, then with a special tool you drive the two or four wedge pins into the threads of the parent material locking the insert in place. Benifit is no bond to have to wait for. They use standard tap & drill sizes. Can be purchased in thin wall, standard, and thick wall configuration. They're machinable. They come in SS, steel (yellow zink coated), and a few other types of materials and coatings.
STI taps are for Helicoils. Timeserts may use them too, that I'm not sure of, but if their site says so, then it safe to assume they do.
A Counterbore, (Also known as: C'bore) is a hole with a flat bottom, deep enough for a socket head cap screw, or any other headed fastener that is required to be below the surface of the material being used.
A Countersink (Also known as: C'sink) is a angled hole (like a funnel) that intersects the clearence hole with a spicific angle for a flat head fastener. The angle of the C'sink should always match the angle underneath the flat head fastener to the threads.
DEMON44
Low-Tech Redneck
It's not a chemical lock for timesert. It's mechanical. The bottom internal thread or two are enlarged so when it is I stalled the flare bottoms out in the counter bore and the install tool drives through the bottom threads mechanically locking them to the base material threads.
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