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Question for the engineers - screw within another screw head
Posted: Sat Feb 10, 2018 7:58 am
by breacher
I am sure I have seen this sort of thing somewhere but cannot find them now as I have no idea what these are called !
Basically a screw with a head which is drilled and tapped to accept a smaller screw.
What are these known as in the trade ?
I could just drill existing screw heads and use smaller self-tapping screws, I guess......but if available off the shelf it would save me time.
Re: Question for the engineers - screw within another screw
Posted: Sat Feb 10, 2018 8:59 am
by ovenpaa
Reducers.
Re: Question for the engineers - screw within another screw
Posted: Sat Feb 10, 2018 9:01 am
by Dellboy
similar idea to mirror screws ?
Re: Question for the engineers - screw within another screw
Posted: Sat Feb 10, 2018 9:02 am
by Dellboy
Re: Question for the engineers - screw within another screw
Posted: Sat Feb 10, 2018 9:31 am
by Lancs_Oakley
Mating screw or coupling screw is what I would call it.
Re: Question for the engineers - screw within another screw
Posted: Sat Feb 10, 2018 9:46 am
by Dellboy
Re: Question for the engineers - screw within another screw
Posted: Sat Feb 10, 2018 9:49 am
by ovenpaa
Is this for a carpentry application?
Re: Question for the engineers - screw within another screw
Posted: Sat Feb 10, 2018 10:21 am
by breacher
Ovenpaa wrote:Is this for a carpentry application?
No - the big screw - self tapping into light plastic. The small screw - attaching very light metal item to big screw.
Re: Question for the engineers - screw within another screw
Posted: Sat Feb 10, 2018 2:29 pm
by 20series
Re: Question for the engineers - screw within another screw
Posted: Sat Feb 10, 2018 2:32 pm
by TomH
No helicoils are for the repair of b*ggered screw threads.