PeteH Posted October 22, 2021 Report Share Posted October 22, 2021 So now of course I am now going to have to take the wheel off the 13/60 to satisfy my curiosity, and check the thread, I suspect it will be metric, But the wheel is a good fit? and the splines are correct, So "easysteer" must have have done their homework?. Pete Link to comment Share on other sites More sharing options...
Pete Lewis Posted October 22, 2021 Report Share Posted October 22, 2021 Come on Colin you never confirmed what darn pitch you used was it the 28 everyone has measured or the std 24 which will just make a new thread to the coarser form you showed in your photo ???? Pete Link to comment Share on other sites More sharing options...
Colin Lindsay Posted October 22, 2021 Author Report Share Posted October 22, 2021 16 minutes ago, Pete Lewis said: Come on Colin you never confirmed what darn pitch you used was it the 28 everyone has measured or the std 24 which will just make a new thread to the coarser form you showed in your photo ???? Pete It doesn't say on the die; obviously it was much coarser than required so I'll drop it back to the owner and ask if he knows. More importantly I'll bring the column with me and they can check the threads themselves. Link to comment Share on other sites More sharing options...
Colin Lindsay Posted October 31, 2021 Author Report Share Posted October 31, 2021 Latest update: the experts reckon it's 9/16 UNEF but want one brought over to check / count the threads accurately. Link to comment Share on other sites More sharing options...
PeteH Posted October 31, 2021 Report Share Posted October 31, 2021 Chart for UNEF:- Nominal Diameter Major Diameter Inch Major Diameter mm Tapping Drill Size mm TPI Pitch mm #12 - 32 UNEF 0.2160 5.486 4.80 32 0.794 1/4" - 32 UNEF 0.2500 6.350 5.70 32 0.794 5/16" - 32 UNEF 0.3125 7.938 7.25 32 0.794 3/8" - 32 UNEF 0.3750 9.525 8.85 32 0.794 7/16" - 28 UNEF 0.4375 11.112 10.35 28 0.907 1/2" - 28 UNEF 0.5000 12.700 11.80 28 0.907 9/16" - 24 UNEF 0.5625 14.288 13.40 24 1.058 5/8" - 24 UNEF 0.6250 15.875 15.00 24 1.05 Pete 1 Link to comment Share on other sites More sharing options...
NonMember Posted October 31, 2021 Report Share Posted October 31, 2021 1 hour ago, Colin Lindsay said: Latest update: the experts reckon it's 9/16 UNEF but want one brought over to check / count the threads accurately. That was discussed earlier. 9/16" UNEF is 24TPI (as per PeteH's chart) but everyone on here that's measured one agrees that it's a 28TPI. Link to comment Share on other sites More sharing options...
68vitesse Posted October 31, 2021 Report Share Posted October 31, 2021 From Tracey Tools catalogue. Regards Paul. Link to comment Share on other sites More sharing options...
Colin Lindsay Posted November 2, 2021 Author Report Share Posted November 2, 2021 Well, this morning's escapade with thread gauges and all sorts of other measurements have decided it's UNS, Unified National Special. Definitely not 24 but even the 28 didn't quite mesh 100%, wonder if it's 27? I wonder if I was to contact any of the suppliers who sell these for our cars, could they confirm what exactly they order? (Just to confuse things even more I've already found a thread online claiming that UNS is 8 threads per inch...) https://cr4.globalspec.com/thread/46416/UNC-Threads-vs-UNS-Threads Link to comment Share on other sites More sharing options...
PeteH Posted November 2, 2021 Report Share Posted November 2, 2021 51 minutes ago, Colin Lindsay said: Well, this morning's escapade with thread gauges and all sorts of other measurements have decided it's UNS, Unified National Special. Definitely not 24 but even the 28 didn't quite mesh 100%, wonder if it's 27? I wonder if I was to contact any of the suppliers who sell these for our cars, could they confirm what exactly they order? (Just to confuse things even more I've already found a thread online claiming that UNS is 8 threads per inch...) https://cr4.globalspec.com/thread/46416/UNC-Threads-vs-UNS-Threads If you really want to complicate it, My thread gauge (28TPI) looks a good fit, when the photo is blown up on photoshop. The downside of that is they (gauges) are actually Whitworth thread form 55deg.!. At that mag; it is getting a bit less distinct. Pete Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now