Bottom bracket frame tube question

[Night Train]

I have been digging around in my stores and rediscovered two raw and unused steel frame components, bottom bracket tubes, that I bought over 15 years ago during my last phase of bike building.

They are 68mm long and 40mm outside diameter with a clock wise screw thread in one end and an anticlockwise screw thread in the other end.

I know bike bits are sometimes timeless and other times changable and easily outdated so is what I have still standard fitment?

Also am I remembering correctly that the anticlockwise thread is the left side?

Thank you.

 

[Bokonon]

Almost certainly going to be a British/ISO thread, which is as common as they get, so getting a suitable bottom bracket won't be a problem. Further details on bb's on www.sheldonbrown.com.

 

[Night Train]

Thanks for that. It means I can use it as one of the fixed points for my design work.