One required per coupling, 84165
No other part numbers with same form, fit, and function found.
NSN 6610-01-609-7776
NSN 5960-00-418-3588
NSN 5960-01-474-4843
NSN 5965-01-647-4195
NSN 6130-01-542-4859
NSN 6610-01-598-4215
NSN 2925-01-448-2880
NSN 6645-01-648-2115
NSN 6240-01-371-3020
NSN 5895-00-234-6319
NSN 5985-00-194-1559
NSN 5965-00-253-1302