Details
AC811BT6 AC811 brass coupling nut for 3/8 in. OD tube, NS condition.
Part Number: AC811BT6
Part Type: Nut - Coupling
Condition: NS
Thread: 9/16-20 (AC811 -6)
The AC811-BT is the coupling nut for the three-piece AC811 flared tube system (fitting, AC811-T sleeve and BT nut), the pre-AN Army Air Corps standard that AN fittings replaced during WWII. In the -6 size the AC811 thread is 9/16-20 while the AN818-6 is 9/16-18, so AC811 and AN nuts are not interchangeable in this size.
Photos are for reference only.
Warranty Information