if there not, i bought some brass rod off of ebay ,cut the length i needed.turned it to fit, then drilled it for the wire to go in then tapped a place for a set screw. i did this for two old plug in welders. bought some heat strink tube to cover them in.these were used on an old marquette welder that had no leads.
Last time I was in my local welding supply house, a customer asked for some and they had 2 sizes hidden in an old dusty box back in the warehouse, must have had 20 pairs.
I have two old plug in machines in the barn that the leads are just sorta insulated any more--both WW2 vintage along with two electric motor generator 400 amp machines that we used to run big hard surface rods on. I do have them shrink wrapped to keep bugs out, but they need 480 3P to run. My wife would question why I need so many welders, when I only have 2 hands. Those old machines won wars, built an industry and helped many a man earn his keep.
`Thanks for the replies. I have a few more questions. This may sound like a really dumb question but which plug in is for the ground clamp? When i took it apart to paint it,I didnt take notice of where it went and never paid attention before. Also there is a removable small panel on the right front with a knob. It has three prongs. Here is a picture. What is the purpose?
I really dont have a good answer. I have a linciln about the same age, and mine has all matter of adjustments! one adjustment for amps and another for volts i assume. It has two dials insted, the amp dial has three different colered arrows the other dial has three diferent colored zones so what ever color zone you are in you use that color arrow. None of the voltage is "specified" you just adjust it to where you want it. kinda like flying by the seat of your pants!