Anyone ever heard of a Ø1 5/8 x 5.5tpi thread?
Its not in my Mach Handbook, but the vendor has supplied a nut with this thread. I made the bolts with a 1 5/8-6 thread. Of coarse, the nut will not thread onto the bolt.
The vendor is telling me that the Ø1 5/8-5.5 is an "industry standard". lol
Anyone else ran into this before?
Never seen that one, I googled it and this is the closest I came.... still not sure how it's a "standard".
1.625 x 5.5 pitch is standard UNC/USS
12 TPI is UNF
Wow, Machinery Handbook does not have that for 1 5/8, but it does have a 1 5/8-24 UNS, which you link shows as N/A. Might be time for a new Machinery Handbook?
1-5/8 is not in MANY of the thread charts.. Most have 1.5 then 1.75 skipping right over the 1.625
There is NO 1 5/8 UNC or UNF according to my Machinery Handbook (25th ed, pg 1667). There are a few other UNS (which denotes special), but no 5.5 is listed.
I guess they can make them whatever they want as long as they call them UNS.
Just because there is some chart on the internet, does not mean its a standard. I think they need to put a little asterick beside what they have listed for the 1 5/8 and 1 7/8 cause there is NO UNC or UNF for those sizes.