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Forum Index : Other Stuff : Drive Screws, AKA U-Drive screws

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joebog1
Senior Member

Joined: 07/11/2015
Location: Australia
Posts: 114

Posted: 07:16am 22 Jul 2018

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Gday everyone,
I have been given some equipment( old motors) that needs painting.
I wish to remove the name plates and specification tags that are held on by Drive Screws.
https://www.rivetsonline.com/drive-screws#1

I guess you will all be familiar with them. Is there any way to remove these from cast iron housings? Ideally I dont want to grind them off as it will be hell to drill them out ( about 1/8"/3mm dia. ). I have has success with transformers, but it seems laminations dont hold them in as well as cast iron.

Thanks in advance
Joe

Boppa
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Joined: 08/11/2016
Location: Australia
Posts: 814

Posted: 07:31am 22 Jul 2018

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I have a set of suttons left hand drills that I have had for years (since my apprenticeship actually) that work well on anything like that (or broken/stripped bolts/screws)

Couple of taps with a centerpunch then slow speed drill out, when it bite will spin them right out every time I found

Note these are NOT easyouts, but actual reverse threaded drill bits

Tinker

Guru

Joined: 07/11/2007
Location: Australia
Posts: 1904

Posted: 07:56am 22 Jul 2018

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How about some idea of the size of these things? Drilling out might only work if the screw head is bigger than 4mm or so.

Klaus

joebog1
Senior Member

Joined: 07/11/2015
Location: Australia
Posts: 114

Posted: 09:36am 22 Jul 2018

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Tinker,

Please read post 1

Joe

p.s. They are American, and as I havent managed to extract one yet I "guess" about 3mm
That is the head size, I "imagine " the shaft size to be "about " 2 to maybe 2.5 mm.

I will post a couple of pics tomorrowEdited by joebog1 2018-07-23

Revlac

Guru

Joined: 31/12/2016
Location: Australia
Posts: 1024

Posted: 11:51am 22 Jul 2018

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Nope, they are not always easy to get them out,

sometimes have had success using a ground down chisel and carefully work around them without damaging the nameplate.
failing that, often the hole that they are in is drilled deep enough to just punch down further if the top is busted off.
You may have to drill new holes just beside the old ones, and hope the nameplate can still cover them.?

Recently did some name plates, worked Ok.

Got the U-Drive Screws from a place in ipswich , Its only a new website Here
Link did not work

http://www.nutzandboltz.com.au/home.html

Yep works now.Edited by Revlac 2018-07-23

Cheers Aaron
Off The Grid

joebog1
Senior Member

Joined: 07/11/2015
Location: Australia
Posts: 114

Posted: 10:14pm 22 Jul 2018

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Yah, Revlac has it. I think I will try using a dremel tool with thin cutting disc, make a screwdriver slot as it were.

Thanks everybody

Joe

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