stripped threads

[temilotzin]

This weekend while using my warp feed on my x-mag I noticed that my tank/asa was loose. When I got back to my tools and tried to tighten it up I found that the first few threads on my grip frame were stripped out. Has anyone else run in to this problem and if so how did you go about fixing it?

[Tunaman]

I can repair that with a Helicoil. Once it is together it should be loctited together. Let me know.

[temilotzin]

I can repair that with a Helicoil. Once it is together it should be loctited together. Let me know.

[craltal]

the hole is drilled larger and a helicoil is inserted into the larger hole, giving you threads the size you need. the coil is lock-tited in place. it's basically a tube that's threaded on the outside and the inside.

[kevdupuis]

It sounds as if your screws are too short and just grabbing the first few threads. Insert the screws through the asa and warp bracket and measure the threads protruding, there should be at least a 1/4" showing but not too long that the screws will hit the board when tightened into the frame.
Make sure to check both with and without the warp bracket so you don't accidently put a screw into the board in the marker and wreck it.

[SR_matt]

the hole is drilled larger and a helicoil is inserted into the larger hole, giving you threads the size you need. the coil is lock-tited in place. it's basically a tube that's threaded on the outside and the inside.

that is incorrect, youa re thinking of a nutsert/ nut insert. a helicoil is jsut a soil of wire. u tap it out a little and put the coil in. a nut sert u bore it out bigger and put a threaded piece of tube in. the nut sert is stronger and holds better.
-matt

[temilotzin]

It sounds as if your screws are too short and just grabbing the first few threads. Insert the screws through the asa and warp bracket and measure the threads protruding, there should be at least a 1/4" showing but not too long that the screws will hit the board when tightened into the frame.
Make sure to check both with and without the warp bracket so you don't accidently put a screw into the board in the marker and wreck it.

[SR_matt]

a suggestion is go and buy longer screws than u need and a pair of bolt cutters (bolt cutters tha the screws thread into so the threads are kept)

you will get the longest screws posiable and least chance of problems
-matt

[Tunaman]

that is incorrect, youa re thinking of a nutsert/ nut insert. a helicoil is jsut a soil of wire. u tap it out a little and put the coil in. a nut sert u bore it out bigger and put a threaded piece of tube in. the nut sert is stronger and holds better.
-matt

No. Helicoils are the strongest way to repair stripped threads. Nutserts suck and will rip right out. They use helicoils for repairing head bolt threads on cars and planes. Try that with a nutsert...

[RatFinkBob]

I have used a heli-coil on a car spark plug before, tapping a head on an engine is WAY more major than a gun frame....... If a helicoil can hold compression in a motor, a little bolt is no prob. Good fix if you ask me!

[SR_matt]

well this discussion was borught up on MCB (IIRC) a while back and the reasoning behind why nutserts were better was because the heli coil was putting basicly a round surface into a v shaped cut thus resultin in less surface contact to keep the piece in.

-matt

[Jaan]

If you get longer screws, and you have to cut them down to length, a good low budget trick is to get a nut that will thread over the screw and thread it on before you cut it. Then cut the screw to length using a Dremel with a cut off wheel, something along those lines. When you take the nut off the screw, it will have the effect of deburring the threads.

[RatFinkBob]

If you get longer screws, and you have to cut them down to length, a good low budget trick is to get a nut that will thread over the screw and thread it on before you cut it. Then cut the screw to length using a Dremel with a cut off wheel, something along those lines. When you take the nut off the screw, it will have the effect of deburring the threads.

J

Jaan is right, I do this all the time!

[SR_matt]

just make sure the nut is as hard or harder of a metal than the screw or you might just end up getting a nut stuck on a scerw
-matt