Foster FIS3F3, 3/8" Snap-Tite IH Air Coupler x 3/8" FNPT, FIH Series, Steel
The Foster FIS3F3 is a Snap-Tite IH interchange air coupler — a one-way shut-off socket built for pneumatic air-tool service. Its valve makes 360° contact with the plug for a reliable seal, and it interchanges with Snap-Tite “IH” Series couplers.
Specifications
- Brand: Foster
- Part Number: FIS3F3
- Series: FIH Series (Snap-Tite IH interchange)
- Type: Coupler (Socket)
- Interchange: Snap-Tite IH Series
- Body Size: 3/8"
- Thread / Connection: 3/8" FNPT
- Valve Type: One-Way Shut-Off
- Application: Pneumatic (compressed air)
- Rated Pressure: 2250 PSI (static, per ANSI/B93.2-1986)
- Temperature Range: -40°F to +250°F (standard seals)
- Seal Material: Buna-N (Nitrile)
- Material: Steel (zinc plated), machined from solid bar stock
- Standard: Meets or exceeds MIL-C-51234
- Latch: Manual sleeve connect/disconnect, hardened for long service life
- Made in USA
Why this coupler
- SNAP-TITE IH INTERCHANGE: Drops in for Snap-Tite “IH” Series sockets so you can service existing air lines without re-tooling.
- 360° VALVE CONTACT: The FIH socket valve seals fully around the plug for dependable one-way shut-off.
- HIGH FLOW: Large internal diameters flow more air than typical double shut-off couplers.
- HARDENED, ZINC-PLATED STEEL: Built for heavy-duty shop and industrial air service.
Machined from solid bar stock with a hardened sleeve, the FIS3F3 stands up to daily air-tool use while dropping straight into Snap-Tite IH air lines.
Frequently Asked Questions
What does it interchange with? Snap-Tite “IH” Series air couplers. FIH sockets and plugs of the same size couple together.
Air or hydraulic? FIH is the pneumatic (air) one-way shut-off line. (The related FH Series covers two-way and straight-thru hydraulic/pneumatic service.)
What plugs fit it? FIH unvalved plugs (the FH-numbered plug line) work with both FH Straight-Thru and FIH sockets.
Brand and Manufacturer: hpcouplers. Ships fast from stock.