1 3/4 inches
No other part numbers with same form, fit, and function found.
NSN 5930-01-210-4312
NSN 5950-00-918-6890
NSN 6685-00-150-7080
NSN 5835-01-136-3394
NSN 4140-01-492-5923
NSN 5996-00-230-5550
NSN 5985-01-252-4016
NSN 6130-01-626-3659
NSN 4140-00-322-9987
NSN 6620-01-118-7588
NSN 5895-01-503-0192
NSN 5895-00-034-5679