3/4 in.
No other part numbers with same form, fit, and function found.
NSN 5998-00-866-4605
NSN 6645-01-559-4934
NSN 5998-01-467-2533
NSN 6320-00-228-5678
NSN 6135-01-377-5729
NSN 2925-01-250-2731
NSN 5960-00-947-5754
NSN 5965-01-379-5870
NSN 4140-00-122-6422
NSN 5895-01-190-2324
NSN 5950-00-243-9040
NSN 6620-00-310-5904