Western Enterprises - RH Nut for Oxygen Hose (B-size)
B-size nut features right hand threads and is used with oxygen fittings.
Requires use of nipple with hose clamp (sold separately) to create proper seal. This item is designed for pressure up to 200 psi.
Western part #: 7
This nut is also available with LH threads (item #wes0007) for fuel lines.