The item named by the manufacturer is a stop assembly
NSN 5915-01-607-4773
NSN 5950-01-603-8138
NSN 5895-01-293-1588
NSN 7035-00-946-2642
NSN 5835-01-656-2940
NSN 6145-01-424-1351
NSN 5935-01-120-9953
NSN 5925-01-139-0103
NSN 4140-01-415-3363
NSN 5905-00-072-4305
NSN 5945-01-361-7687
NSN 5895-00-222-8555