4 holes equally spaced, countersunk 82 degrees by 0.281 in. Dia
Classification: Military equipments not identified by kind
NSN 5985-01-369-4721
NSN 5999-00-155-3088
NSN 2925-01-308-4764
NSN 6320-01-253-1028
NSN 2925-01-464-3093
NSN 6220-01-154-4781
NSN 6610-01-236-8359
NSN 5905-01-415-2902
NSN 5965-01-062-6237
NSN 5935-01-056-5176
NSN 5920-01-080-1441
NSN 5945-00-471-3693