Value Brand
Value Brand 6AFK7 Brass Hose Barb 5/16 in x 3/8 in MNPT
Brass hose barb connects 5/16 in hose to 3/8 in NPT for low-pressure air or water lines
- Brass construction resists corrosion for long service life
- Straight profile enables direct in-line hose routing
- 5/16 in barb fits 5/16 in I.D. hose securely
- 3/8 in MNPT thread mates with standard NPT ports
- 11/16 in hex head allows easy spanner tightening
Brass hose barb for pneumatic lines
The Value Brand 6AFK7 is a straight brass fitting that joins 5/16 inch inside-diameter hose to a 3/8 inch male NPT thread. It suits low-pressure air or water circuits where a simple, in-line connection is required. The barbed end grips the hose while the threaded end screws into a matching port.
Low-pressure thermals and flow
Brass construction resists corrosion in compressed-air and water service without adding measurable flow restriction. The rigid, straight body introduces no sharp bends that could increase turbulence or pressure drop in normal use. No moving parts mean no vibration or noise is generated by the fitting itself.
Hex head eases installation
An 11/16 inch hex allows a standard wrench to tighten the NPT side without rounding the fitting. The barbed tail accepts a hose clamp for a secure seal on 5/16 inch I.D. hose. No additional adapters, sealants or software are bundled with the fitting.
Highlights
- Brass construction resists corrosion for long service life
- Straight profile enables direct in-line hose routing
- 5/16 in barb fits 5/16 in I.D. hose securely
- 3/8 in MNPT thread mates with standard NPT ports
- 11/16 in hex head allows easy spanner tightening
Specifications
| Brand | ZORO SELECT |
|---|
Questions about this item
How do I install the 11/16 in hex head on a 3/8 in MNPT port without stripping the brass?
Thread the fitting by hand until the taper seats, then tighten one to two turns with an 11/16 in wrench; over-tightening the brass hex is the common error that cracks the threads.
Will the brass barb need replacement if the hose clamps loosen over time?
The brass body resists corrosion, but the 5/16 in barb can deform if clamps are repeatedly over-tightened; inspect the barb for flattening during routine hose changes.
At what pressure does the straight brass fitting begin to leak under continuous airline vibration?
The fitting is rated for low-pressure pneumatic service; sustained vibration above the application’s rated pressure typically causes the NPT seal to weep first.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.



