Foster 310M-4404, 3/8" ARO Coupler x 1/2" Female NPT, 310 Series, Manual, Brass and Steel
Reliable 3/8" air connections that interchange with ARO 310 Series couplers and plugs. The Foster 310M-4404 is a brass and steel 3/8" coupler from the Foster 310 Series, rated to 300 PSI and built in the USA for shop air, tools, and pneumatic service.
Specifications
- Brand: Foster
- Series: 310 Series (ARO 310 Interchange)
- Part Number: 310M-4404
- Interchange: 3/8" ARO 310
- Body: 3/8" Coupler
- Thread: 1/2" Female NPT, FPT
- Type: One-Way Shut-Off
- Operation: Manual sleeve (retract to connect and disconnect)
- Material: Brass and Steel
- Working Pressure: 300 PSI
- Temperature Range: -40F to +250F (Buna seal)
- Quantity: 1pc
- Origin: Made in USA
Why this coupler
- Manual sleeve operation — which means a positive, deliberate connect/disconnect by retracting the socket sleeve.
- ARO 310 interchange — which means it mates with industry-standard ARO 310-style 3/8" air fittings.
Frequently asked questions
What does this connect to?
It interchanges with ARO 310 Series plugs — a widely used 3/8" air-coupler style.
What pressure is it rated for?
Rated to 300 PSI working pressure, -40F to +250F with Buna seals.
How does it connect?
Retract the socket sleeve to connect and to disconnect (manual operation).
Ideal for shop air lines, pneumatic tools, and air service. Pair this coupler with a matching 3/8" ARO 310 plug for a complete, leak-free connection.
Why buy from hpcouplers: Foster quality, responsive US-based support, accurate specs, fast shipping.