Per mfr, this is a kit with new hinges used to replace existing hinges
NSN 5998-00-840-5463
NSN 6110-00-721-4042
NSN 5855-01-486-7538
NSN 6220-01-508-3408
NSN 5945-01-178-6832
NSN 5960-00-249-9623
NSN 6150-00-443-0099
NSN 5950-01-245-8847
NSN 6135-00-932-3136
NSN 5935-01-080-5041
NSN 6645-01-624-3467
NSN 5950-01-301-9809