I need some self-tappers that have a hoop at the top (like a vine eye)
rather than just a usual screw head. (Obviously I want to screw them
into metal). I've looked in the usual places and done a bit of
googling to no avail. I've come to the conclusion that they don't
exist, but I'm hoping you lot can prove me wrong.

"Anita Palley" wrote in message
...
I need some self-tappers that have a hoop at the top (like a vine eye)
rather than just a usual screw head. (Obviously I want to screw them
into metal). I've looked in the usual places and done a bit of
googling to no avail. I've come to the conclusion that they don't
exist, but I'm hoping you lot can prove me wrong.

Get the threaded type and buy a tap.

Mike

"MuddyMike" wrote in message
om...

"Anita Palley" wrote in message
...
I need some self-tappers that have a hoop at the top (like a vine eye)
rather than just a usual screw head. (Obviously I want to screw them
into metal). I've looked in the usual places and done a bit of
googling to no avail. I've come to the conclusion that they don't
exist, but I'm hoping you lot can prove me wrong.

Get the threaded type and buy a tap.

Mike

Vine eyes, by their nature, get combinations of outwards and lateral forces,
varying with growth and wind load. Not good loadings for self tapping screws
which normally go into relatively thin sheet. (The drill/tap screws for
going into thicker metal are a bit different).

Tell us more about what you are actually trying to do and you may get some
more helpful suggestions.

On Mar 3, 2:34*am, Anita Palley wrote:

Thanks for advice so far. They're to go into the legs of a table which
seem to be made of steel (square section, hollow). It's to turn it
into a bondage table, ie fixings for ropes etc.

Don't use self tappers for BDSM. The back & forth strains pull them
loose over time. If you have access to the back (i.e. it's flat
sheet), then use either nyloc nuts, or if it's exposed use a
combination of a standard nut and an acorn nut (Screwfix, stainless,
cheap) to cap off the end of the thread and avoid rope snagging.

If it's going into square steel tube, then you need something
insertable from just one side. The best are collapsible tube nut
inserts (a thread this week), which you insert with a thing like a pop
rivet tool. eBay has loads. I'd use a pair of M8 bolts to hold down a
tie down plate. You can also bolt into 1" tube by drilling right
through both sides and using a longer bolt (again, with acorn nuts to
cap)

Don't even think about building hoists unless you know what you're
doing. Particularly not if it's club or commercial.