I'm looking for the name of a fitting.
I need to screw a platform onto some legs that will support it. The
idea is to drill a hole (countersunk) down through the platform,
insert a threaded bolt and then screw into the leg. The top of each
leg will have a hole bored in it, with a threaded cylindrical metal
receptacle for the bolt embedded in the hole. The idea is that the
bolt screws into the receptacle, making the assembly easy to take
Anyone know what this receptacle is called, and a good place to find
them? Home Depot and Lowes don't seem to have them.
I think you've described a "standoff". Radio Shack sells them in
a 1/4" hex by maybe 3/4" long size, and I'm sure that there are
other sizes out there.
If you know anyone with a (metal) lathe, they're pretty easy to,
ahem, turn out, given some hex or round stock and the appropriate
tap. But 'standoff' is the word you need here, and you should be able
to buy whatever you need without making it.
I've made 'em when I didn't feel like driving to the hardware store.
You didn't say whether or not the platform is intended to support one or
more humans but if it is, I wouldn't trust threaded inserts. There is
another device called a cross dowel that is inserted into a hole bored at
right angles to the centerline of the bolt and the bolt threads thru its
shank. It is about three times as long and the diameter of the bolt and I
believe it to be much more secure than a threaded insert because there is
much more than just threads bearing its load. Cross dowels are often used
to assemble furniture made of particle board because threaded inserts
usually strip out in such applications..
In your application if the bolts securing the platform are inserted
vertically, the cross dowels would be inserted in holes bored horizontally.
T-nuts are basically worthless if used on the TOP of a table let, they
don't really have any holding power and pull out of the drilled holes
easily. They really are best used with the bolt/screw/whatever coming
thru from the opposite side so the flange of the T-nut is pulled up
against the wood to supply strength/rigidity
Threaded inserts would be the better choice here, OR KD hardware with
a thru dowel/etc that is threaded to catch the bolt
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