Is a PTF-SAE Short thread the same as an NPT thread, but a dry seal variation? We are in a mechanical/hydraulics industry and we constantly use NPT, UNO, BSPP and BSPT threads but have not come across PTF-SAE short. I was wondering if they are compatable (ie: can you screw a PTF-SAE short male...
Thank you all very much.
The 'sps' was related to Atlas Specialty Steels in Canada.
It is an old coding (not used any more) & standard 4140 T is the same as 4140/sps.
I have a Canadian drawing that specifies the material to be 4140/sps. I am in Australia and we are manufacturing the component and were wondering what the sps refers to.
Our 4140 grades are only single digit letters, ie: 4140 T. Can anyone help?
