A quick learner from Greensboro NC says:
December 17, 2012
Do you have a part that fits this description, 1" od on roller-overall lenght is .926-non threaded section on stud is .289 - threaded part of stud is .362 - rod is threaded at 5/16-24.
Tom from SWISCO responded:
December 18, 2012
Thanks for posting! Have you seen our 32-096 Drawer Slide Roller? This appears similar to your own hardware. Please compare the two and let me know if they match up.