2 mm
No other part numbers with same form, fit, and function found.
NSN 5998-00-343-0732
NSN 6105-00-466-9880
NSN 5895-01-541-0957
NSN 6150-00-393-0498
NSN 5935-01-298-5293
NSN 5920-00-636-4713
NSN 6320-01-228-2380
NSN 5930-01-558-4401
NSN 5975-00-771-6691
NSN 5945-00-005-9719
NSN 5998-00-948-5298
NSN 5965-01-230-8792