Used on anesthesia machine
No other part numbers with same form, fit, and function found.
A nut having wings designed for manual turning without driver or wrench.
NSN 5990-00-893-8998
NSN 6150-01-272-4385
NSN 6220-01-504-8519
NSN 6135-01-633-8502
NSN 2925-01-379-6183
NSN 5915-00-402-7469
NSN 6105-01-634-0322
NSN 6645-00-796-7206
NSN 5985-01-178-2652
NSN 6240-01-166-4517
NSN 5935-01-014-1486
NSN 6620-01-232-0680