oftentimes someone will use a drill size larger than specified or they may intermix threads such as standard or metric. ive never had a properly installed helicoil fail before in aluminum, cast iron, or steel. maybe if its really screwed up i could have a machinist make a sleeve with threads on the outside and threads on the inside to match my bolt , i could have the machinist drill, tap, and install this sleeve for me. i certainly dont want the person who screwed up the helicoil to touch the job again.
2006-07-03 04:35:48 · 9 answers · asked by curious guy 2 in Cars & Transportation ➔ Boats & Boating
There is a larger OD insert that can be used if space allows. It is called a "keen-sert". It will allow you to keep your stock bolt size.
They are not available at your local hardware store but can be ordered as a single item from most industrial suppy, or do a search and order online.
I have also installed a heli-coil within a heli-coil (one at a time with red loctite on the outer insert).
2006-07-03 05:09:08 · answer #1 · answered by john b 1 · 2⤊ 0⤋
It depends on the location of the hole, since we're in the boating section for answers. As described by others, if possible. drill and retap to a larger size, or use a self tapping screw or bolt. If the item can be removed from the boat, it can be welded, drilled and tapped to the original size. If it's to hold an item that you're never going to unscrew again, and there's no pressure of any kind on it, like water, fuel, or exhaust, an industrial epoxy may do the trick.
2006-07-03 07:19:49 · answer #2 · answered by Anonymous · 0⤊ 0⤋
You will need to drill the hole one size larger. If the aluminum is not that thick you can certainly hand tap it out to be metric or standard in the larger size. This is the only way I know of with out going through the trouble of a machinist.
2006-07-03 04:41:28 · answer #3 · answered by clscheufler77 1 · 0⤊ 0⤋
Not being familiar with your exact situation,and it seems all other remedies have been suggested, maybe you could possibly drill the hole all the way through and nut the bolt from the backside.
2006-07-04 15:09:40 · answer #4 · answered by luther 4 · 0⤊ 0⤋
Spray the bolt with a good lubricant or "Pam" fill the hole with a good epoxy. Than while the epoxy is still wet put the bolt in the hole in it's proper position.
When the epoxy harden, unscrew the bolt.
2006-07-03 06:39:11 · answer #5 · answered by always a friend 3 · 0⤊ 0⤋
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2006-07-03 06:22:39 · answer #6 · answered by Anonymous · 0⤊ 0⤋
Drill the hole out and retap the hole with a tap and die.
2006-07-03 04:39:17 · answer #7 · answered by Anonymous · 0⤊ 0⤋
drill it and re tap the hole in a bigger size
2006-07-03 04:40:20 · answer #8 · answered by mi_gl_an 4 · 0⤊ 0⤋
You answered your own question! They should give you two points.
2006-07-03 04:43:01 · answer #9 · answered by rex_rrracefab 6 · 0⤊ 0⤋