UNS 1/4″ x 32 the same as ME 1/4″ x 32 ?

[Blue HeelerParticipant @blueheeler]

Forgive me is this is a stupid question but is UNS 1/4" x 32 the same as ME 1/4" x 32 ?

[Blue HeelerParticipant @blueheeler]

[peak4Participant @peak4]

Posted by Blue Heeler on 29/09/2020 23:45:16:

Forgive me is this is a stupid question but is UNS 1/4" x 32 the same as ME 1/4" x 32 ?

 

I'll stand to be corrected, but I thought ME threads were based on BSW/BSF thread form, which would put the included angle at 55°, whereas UNS is based on Unified threads at 60°

Bill

p.s. no question is stupid, but beware of some of my answers. 

p.p.s. Lots of useful stuff on this chap's website ; particularly the Data and Tables tab

Edited By peak4 on 30/09/2020 00:16:48

[Thor 🇳🇴Participant @thor]

Bill is right, here or here are charts of American screw threads, and here for ME threads.

Thor

[Blue HeelerParticipant @blueheeler]

Thank you for the replies, appreciated.

[JasonBModerator @jasonb]

You want the UNEF 1/4 x 32 for glow plugs, mini sparkplugs etc.

[I.M. OUTAHEREParticipant @i-m-outahere]

If you need one of these taps or dies you can try LPR toolmakers in Victoria , they are usually my first port of call for odd sizes or obsolete thread forms .
An engine i’m looking at building – The M.E. Beam engine requires a 10BA – LH thread for the throttle linkage adjuster nut and one end of the throttle rod ( creates a turnbuckle arrangement ) try getting one of those here in Australia 😫.

[Blue HeelerParticipant @blueheeler]

Thanks XD, I wanted to make up some extra BIX gas burner copper lines with gas jets for some steam engines and the thread is Me 1/4" x 32" I have all the other ME taps & dies except that. I get a lot of stuff from LRP we are lucky that we have them for a lot of things. Getting them in from the UK, the postage is always rising.

[Author]

Posts