Installing tenon brass inserts

[Tim Benware]

I use several thousands less than the outside diameter. The 1/4-20 coarse thread inserts I use recommend a 3/8" drill bit but I find that is too loose. I'm pretty sure I use an "S" (.348) or "T" (.358). I always seem to drill a test hole first to be sure.

[Dave Bagwill]

I purchased a few of the inserts at Ace hardware today - I'm a little worried as they were only .50 each. Might they be inferior quality compared to what the rest of you use?

[ken cierp]

Picture? Size and shape are paramount, what are they made of?

[Dave Bagwill]

I'll get a pic. The size is just right, the amount of threads is also, I don't know what the material is, as it was not listed on the box. I t was in a section called 'furniture hardware'.
Pic to follow.

[ken cierp]

For the course thread 1/4 -20 ----- I use the fixture shown in the start of this thread to prevent blow out, the drill bit is size"O" which mnakes the inserts a snug fit which you most certainly want, that and the CA keep the insert from backing out --- I should warn once again that over tightening the neck bolts can break the insert bond and can result in all sorts of complications upon trying to remove the neck

[Dave Bagwill]

Here's a pic. The insert material is drawn to a magnet.

[ken cierp]

Seems that should work OK. The slot looking end is a thread cutter not for a screw driver.