B-nut

B-nut

B-nut
A nut used in aircraft tubing to connect a piece of flared tubing to a threaded fitting. B-nuts are used with a sleeve that is slipped over the flared tubing.
References in periodicals archive ?
During a plane captain preflight inspection of the engine compartment of an SH-60B, Petty Officer Ramosruano noticed a missing torque stripe on the B-nut for the load-demand-spindle (LDS) cable.
Additional examination of the wastegate oil inlet hose at the B-nut revealed that 4-5 threads were engaged and the B-nut was finger loose.
He found a cracked B-nut in an obstructed location on the underside of the No.
The crack was found on the end B-nut taper at the fuel control.
Post-crash examination revealed the B-nut fitting securing the fuel line to the fuel flow transducer was loose.