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Screw thread identity ?
Posted: Sun Jun 15, 2025 8:20 pm
by dirtbag
Hi there, long shot , and sorry not much to go on, but checking to see if anyone could tell what type of thread this is please ?
Making a replacement screw and this thread fits , but too short.
Diameter ~ 4.66mm
Re: Screw thread identity ?
Posted: Mon Jun 16, 2025 6:15 am
by rocketdogbert
You really need a thread measuring gauge. Any idea if it’s metric or imperial or something weird?
Re: Screw thread identity ?
Posted: Mon Jun 16, 2025 5:38 pm
by shoppe
It's probably 3/16 something.
Need more info like thread pitch.
Thread pitch gauges are ideal for this or its possible to get it near enough with calipers
Once you have the Thread pitch ,buy yourself zeus chart booklet.
It list lots of engineering stuff. look for thread that matches the diameter ( 3/16?) And the thread pitch.
It's probably available online.just see what thread matchs the 3/16
Or do a search on Internet by entering 3/16 by the Thread pitch ( what ever it is).
It will come up with the name of Thread
Re: Screw thread identity ?
Posted: Mon Jun 16, 2025 7:29 pm
by rocketdogbert
https://www.accu.co.uk/ Are about the most comprehensive supplier of threaded parts I’ve found
Re: Screw thread identity ?
Posted: Mon Jun 16, 2025 8:46 pm
by channel12
shoppe wrote: ↑Mon Jun 16, 2025 5:38 pm
It's probably 3/16 something.
Need more info like thread pitch.
Thread pitch gauges are ideal for this or its possible to get it near enough with calipers
Once you have the Thread pitch ,buy yourself zeus chart booklet.
It list lots of engineering stuff. look for thread that matches the diameter ( 3/16?) And the thread pitch.
It's probably available online.just see what thread matchs the 3/16
Or do a search on Internet by entering 3/16 by the Thread pitch ( what ever it is).
It will come up with the name of Thread
I inherited both the Zeus booklet and a thread pitch gauge very useful when trying to find what thread is the screw. If the screw is modern then the usual suspects are either metric or American. Older and British then it's good luck working it out, British bicycle thread anyone?
Re: Screw thread identity ?
Posted: Tue Jun 17, 2025 1:17 pm
by Richo
Hi Dirtbag
Just a though if it's an imperial thread it could be 2BA 0.01850" (4.70mm) 0.0319" pitch, but as mentioned above thread gauges are the way to go.
Re: Screw thread identity ?
Posted: Sat Jun 28, 2025 9:42 am
by Dellboy
whats it from would help
Re: Screw thread identity ?
Posted: Sat Jun 28, 2025 3:08 pm
by Mauserbill
Hello
Re tap the hole a fit a metric screw ?