Inside of belt is positive drive, outside of belt has pins to drive paper, used on data printer b-140
A flat internally toothed belt or a round belt with protuding pins, designed to engage with corresponding teeth or corresponding grooves on the sprockets over which they run.
NSN 5975-01-053-6294
NSN 5835-01-442-6482
NSN 6105-00-733-9226
NSN 5915-01-383-7190
NSN 5915-00-829-0035
NSN 6610-01-281-7536
NSN 5835-01-392-0575
NSN 6135-01-116-3385
NSN 5895-01-380-2092
NSN 5975-01-609-7024
NSN 5855-00-221-9435
NSN 5998-00-244-8629