Looking for an internally threaded Allen bolt/nut

[beanbag]

I guess it is technically a nut because it has female threads. I want to bolt a plate onto a stud that is sticking out, except that the stud is kind of on the short side relative to the plate's thickness. There exists this kind of nut which is shaped like a normal Allen socket head screw, except that the body is smooth on the outside and the threads are on the inside. The plate has a hole much bigger than the stud, and gives the nut enough room to screw over the stud. Then the head of the nut catches onto the plate and that holds everything down.

Anybody know exactly what this is called, and where to get some? I need size M6x1.

[Peter.]

A hank bush?

EDIT: no, just re-read your description. What you need is similar to the nut they use to hold the exhaust manifold clamp plates on Yamaha motorcycles. You tighten them using an allen key.

[Peter.]

Here you go, M6 stainless allen-nuts

http://cgi.ebay.co.uk/YAMAHA-DT250-D...-/120649614401

[Lew Hartswick]

Except he needs a flange on the head. I'd make it if I only needed one
or two. Start with a large socket head cap screw remove the threads
to clear the hole (or make the hole to fit the screw) and then bore
and thread the inside to fit the stud.
...lew...

[Peter.]

I saw that, but the bolts look quite thick walled so possibly thick enough to allow for machining a step. Either that or turn a step and use a washer.

[Weston Bye]

Google the term sex bolt. No kidding

[Peter.]

No thanks

I was just thinking that this type of bolt is also used extensively in flat-packed furniture - the kind you spend all weekend trying to assemble into something Homer Simpson would be proud of

[Toolguy]

I would get long 10mm allen bolts that have a straight part between the head and threads. Cut the threads off and drill and tap the middle for a 6mm. Even grade 8 bolts are fairly soft in the middle.

[doctor demo]

Google the term sex bolt. No kidding

Yup, use a similar fastener to attach door closers to metal doors only We call them She bolts.

Steve

[RussZHC]

You will also find them under "Chicago screws" and that you can get the stud longer by using a "post" extension (so you would not have to have both "halves" of a Chicago screw "set"...just extend the post and use a nut...mentioned as most that I could find were slotted heads and that in turn may not be a good choice for your application)