"Helicoil" installation without the insert tool? Need advice

aribert · 2009-03-05T17:04:59+00:00

I have never had much luck in using Helicoil thread inserts - evenwhen I used a kit. Now I am trying to do so without buying a kit.I am trying to install (1) 1/4-28 thread insert. Because of arelatively thin wall condition, a thin wall solid thread insert is outof the question (my prefered solution for thread inserts). About 15 -20 years ago I aquired a strip of 1/28 thread inserts (brand unkbown).So I figured that I would buy a 1/4-28 thrd insert tap from McMaster-Carr and fumble thru getting the one thread installed (and have thetap available to use in the future).No luck in fumbling thru with it. I tried to twist the insert toreduce the OD, I tried to deform the end of the insert to make itundersize, I tried to install the insert backwards, I threaded theinsert on a short 1/4-28 SHCS to use as an install tool. Looking inthe McMaster catalog, I see that the installation tool for the 1/4-28is a winder style to reduce the OD of the insert for $32+. For thoseof you who use these regularily and know what you are doing - adviceplease. Obviously, I am not overly interested in spending more moneyto install one insert.

Mar 05, 2009 22 Replies

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Step 5 of 7 in the reading guide Identifying and repairing screw threads

PrecisionmachinisT 14 years ago

At least it spurred a bit of on-topic discussion.

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Jim Wilkins 14 years ago

I saw it, but took a chance to be helpful.

This Windows system is a "sandbox" that can be overwritten if infected.

jsw

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Part of a reading guide

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