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+--- Thread: Source for metric set screws? (/thread-1989.html)
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Source for metric set screws? - Highpower - 02-02-2014
I need two metric set screws. M4-0.75 x 10mm
No luck finding any in the 0.75mm pitch.
Oddly enough, my tap & die set came equipped with that size though.
Any ideas where I might find some of these screws?
Serves me right for buying tools made in France I suppose.
RE: Source for metric set screws? - TomG - 02-03-2014
Willie,
No clue on the screws but believe it or not, M4 x .75 dies are available. Just run some M4 x .7 screws through one. The difference in pitch is only about 2 TPI.
Tom
RE: Source for metric set screws? - Highpower - 02-03-2014
Intentional cross threading?
Well, for 70 cents worth of screws I suppose I wouldn't have much to lose. I'll give it a try. Thanks Tom.
Failing that I think I might drill and re-tap to M5-0.8 rather than spend days/weeks looking for the correct screws. I would have liked to keep things original though.
RE: Source for metric set screws? - Mayhem - 02-03-2014
Willie - what drive method (slot or hex)? I can send you some.
RE: Source for metric set screws? - PixMan - 02-03-2014
Funny that when I looked at the available metric thread pitches on my lathe I found that I can single point a 0.75 thread but no setting for 0.70mm
RE: Source for metric set screws? - unioncreek - 02-03-2014
Have you checked ACE hardware? In my area they have a large selection of them.
Bob
RE: Source for metric set screws? - Highpower - 02-03-2014
(02-03-2014, 06:19 AM)Mayhem Wrote: Willie - what drive method (slot or hex)? I can send you some.
Thanks Darren, but there is no going back now.
Original slotted screws on top, the right one missing half of the 'head'.
I picked up a couple of 0.7 pitch screws this morning and tried running one through my 0.75 die. (Bottom center.) Major fail. All it did was roll over the crests of the original threads and then began to tear them out.
![[Image: screwed.jpg]](http://img.photobucket.com/albums/v82/Highpwr/Temp/screwed.jpg)
So I went to plan "B" and drilled & tapped the housing to M5-0.8 instead. The hex drive screws work sooooo much better since the heads don't spread apart when you twist on them.
![[Image: ForceGauge.jpg]](http://img.photobucket.com/albums/v82/Highpwr/Temp/ForceGauge.jpg)
RE: Source for metric set screws? - EdK - 02-03-2014
Good to see you got it fixed Willie. That sure is a strange thread. The closest I could find was a 4.5mm x .75 thread.
Ed
RE: Source for metric set screws? - Arbalest - 02-03-2014
I've never seen that size on any metric thread chart before. I notice the gauge is made in France though so maybe not a surprise!
RE: Source for metric set screws? - Highpower - 02-03-2014
(02-03-2014, 05:07 PM)EdK Wrote: That sure is a strange thread.
Ed
The problem with "standards" is - there are too many of them!