2.4 mm
No other part numbers with same form, fit, and function found.
NSN 5975-01-035-8810
NSN 6610-01-040-4430
NSN 5915-01-492-9691
NSN 5985-01-112-9864
NSN 5945-01-167-8498
NSN 5950-00-921-1233
NSN 6130-01-603-0801
NSN 6145-01-463-9205
NSN 5935-01-265-0236
NSN 5996-01-416-9391
NSN 6620-01-374-4382
NSN 6150-00-184-8707