Jesse Open

Good tip thanks for the reminder.
I’m in the habit of buying the longer inserts.
Having several uses, and since they are very easy to trim; I just keep the longer version on hand and trim as needed.
The local machine supply here has that one on the shelf.
1/4-32 threads are used often on various instruments.

Glowgeek

Timeserts lock in by swaging the bottom 2 threads outward with the special set tool. If the bottom is trimmed off they will no longer lock in place. Can be epoxied in though......I use JBweld to add retension insurance, in addition to the swaging on these tiny Timeserts.

Jesse Open

Yes, I am familiar. We used them by the boxful.
The trimmed end is simple (for us) to re-shape.

Once installed they stay put and do not leak.
BTW, the eBay link was picked at random, mostly to show the street price. For the sake of helping the OP to choose between repair and replacement costs.

Again, thanks for pointing out that his application requires a different kit number.