First, I am sorry, yes keenserts are about 2-2.5 times more expensive than EZ Lok inserts, and yes, on moderate and low load repairs, they are sufficient.
I wasn't trying to infer that you were doing repairs to equipment that is critical of life/obscenely expensive equipment by quoting military aircraft, NASA and Cat equipment. I was trying to make the point that those organizations have spent 10s of thousands of dollars minimum testing different thread repair techniques, and your insistence on a weaker OD thread of keenserts would of been brought to the forefront if it was an issue. In many applications in these organizations Keenserts are the only allowed repair.
Your statement in the regard to the thread strength had me assuming that you were doing something of high strength. I am sorry for assuming that.
I really am trying not to be argumentative, just provide factual info, but EZ lok thinwalls and Keensert Thin walls mostly have the same wall thickness in a lot of the sizes. Keenserts do have a thickwall version as well that you may have been looking at.
I'm not trying to be difficult either. There is a noticeable large flat at the base of the keensert thread form and they suggest a larger drill bit than standard. Maybe they make up the lesser contact with superior materials?
With the E-Z Lok I can easily tighten up the thread a touch with a slightly smaller drill bit for better than 75% contact.
For the stuff I do I think I'm going in the right direction.
