55320-6-1/8 by AIGNEP | 55/56 Series | Male Swivel | 6mm Tube x 1/8" Swift-Fit Male | Y | Pack of 10 Vapor Recovery - Breakaway Fittings the terms iron pipe size

the terms iron pipe size (IPS) or nominal pipe size (NPS) are usually used

Brass FS506 3/4" Brass BLFS506 3/4" Ball Lock

If you plan to interchange these couplings

33" 2062-24-20S - - 1

& Steel Plug: 2MF2-PL Socket/Female 1/4" 1/4" - 18 Female NPT Steel/Brass 1

55320-6-1/8 by AIGNEP | 55/56 Series | Male Swivel | 6mm Tube x 1/8" Swift-Fit Male | Y | Pack of 10 Vapor Recovery - Breakaway Fittings the terms iron pipe sizeUnion Y SWIFTFIT Composite Pressure Rating: Vacuum 250 PSI Temperature Range: 0 176 F Tubing Compatibility: Nylon, Polyethylene, Polyurethane, Copper Media: Compressed Air, Vacuum Body: Nylon Thread Seal: NBR 70 Thread Type: SWIFTFIT Product Number Tube A B C L CH1 CH2 55320 4 1 8 4 mm 1 8" 5. 5 mm 11 mm 38 mm 10 mm 11 mm 55320 4 1 4 4 mm 1 4" 7 mm 11 mm 40. 5 mm 10 mm 14 mm 55320 6 1 8 6 mm 1 8" 5. 5 mm 13. 5 mm 43 mm 12 mm 11 mm 55320 6 1 4 6 mm 1