As differentiated by special test features
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 6135-01-508-3784
NSN 5855-00-198-3197
NSN 4140-01-424-0474
NSN 5920-01-196-4614
NSN 6105-01-370-4267
NSN 5930-00-725-7678
NSN 6320-01-129-9656
NSN 6620-00-992-1537
NSN 5915-01-067-1772
NSN 6685-01-290-5320
NSN 5975-00-339-3313
NSN 7035-00-238-3662