Secure, high-flow air connections that interchange with Lincoln Long Nose couplers. The Foster LN3003 is a brass and steel 1/4″ coupler from the Foster LN Series, rated to 300 PSI and built in the USA for air-operated tools and equipment.
Specifications
- Brand: Foster
- Series: LN Series (Lincoln Long Nose Interchange)
- Part Number: LN3003
- Interchange: 1/4″ Lincoln Long Nose
- Body: 1/4″ Coupler
- Thread: 1/4″ Female NPT, FPT
- Type: One-Way Shut-Off
- Operation: Automatic push-to-connect (retract sleeve to disconnect)
- Material: Brass and Steel
- Working Pressure: 300 PSI
- Temperature Range: -40F to +250F (std seals)
- Locking Device: Balls or pins
- Quantity: 1pc
- Origin: Made in USA
Why this coupler
- Automatic push-to-connect — which means single-handed connection; push the plug in, retract the sleeve to disconnect.
- Lincoln Long Nose interchange — which means it mates with Lincoln “Long Nose” style 1/4″ air couplers and plugs.
- Locking feature — which means balls or pins prevent accidental coupler detachment under load.
- Free swivel — which means the connection rotates to help prevent kinking or curling of air hoses.
- Larger air passage — which means increased air flow for better tool performance.
Frequently asked questions
What does this connect to?
It interchanges with Lincoln Long Nose plugs — a 1/4″ air-coupler style used on air tools and equipment.
What pressure is it rated for?
Rated to 300 PSI working pressure, -40F to +250F with standard seals.
Does it lock?
Yes — a ball or pin locking feature helps prevent accidental detachment, and the free swivel reduces hose kinking.
Ideal for air-operated tools, shop air, and lubrication equipment. Pair this coupler with a matching 1/4″ Lincoln Long Nose plug for a complete, leak-free connection.
Why buy from hpcouplers: Foster quality, responsive US-based support, accurate specs, fast shipping.
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