• Foster FM5305 1/2" industrial air coupler, 1/2" Male NPT, Brass
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Foster

1/2" Industrial Air Coupler, Automatic x 1/2" Male NPT, Brass | Foster FM5305

1/2" Industrial Air Coupler, Automatic x 1/2" Male NPT, Brass | Foster FM5305

$51.79 USD
$51.79 USD
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Sold and shipped by Industrial Supply World from our warehouse in Elgin, Illinois.

Low stock: 9 left

Foster FM5305 is a 1/2" body industrial interchange air coupler with a 1/2" Male NPT end, all-brass body, automatic (push to connect). Rated 300 PSI with a Buna-N seal for -40°F to 250°F.

The 1/2" industrial interchange (ISO 6150-B / ANSI T3.20.14) is the larger-body version of the common 1/4" industrial profile: more airflow for impact wrenches, sanders and long hose runs. It takes 1/2" industrial-style plugs only; 1/4" plugs do not fit. The coupler half is valved: pull the plug and the line shuts off.

Foster has made these in the USA since 1919, and this is the same industrial-grade coupler that goes on production-floor air drops and professional shop lines, not a light-duty import. Machined brass and plated steel, built to be rebuilt rather than thrown away.

Not sure which style your tools use? Email support@industrialsupplyworld.com with a photo of the plug and we will match it.

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OUR VERDICT

Automatic 1/2" industrial coupler: push the plug in and it locks on its own. The right choice when the same hose changes tools all day. Industrial-style plugs only.

WHAT WE LIKE
  • Made in the USA by Foster, heavy-duty industrial grade
  • Push the plug in and it locks, no sleeve to pull back
  • Solid brass body
  • One-way shut-off on disconnect
WORTH NOTING
  • Costs more than the manual coupler
  • Pull the sleeve back to release, same as a manual
Specifications
Series5 Series
Temperature range-40°F to 250°F
Max working pressure300 PSI
InterchangeIndustrial Interchange (I/M)
ComponentCoupler (socket)
Body size1/2"
Body materialBrass
Seal materialBuna-N (NBR)
Socket actionAutomatic (push-to-connect)
ValvingOne-way valved
Read the guide for this product line →
Industrial Interchange (I/M) — also sold as Milton M-style / Type D. Any brand's plug or coupler in this profile fits this part. Not compatible with ARO or Tru-Flate.Full interchange lookup →

Complete the connection

This is a coupler (socket) in the Industrial Interchange (I/M) profile. It only mates with Industrial Interchange (I/M) plugs (nipples) — any brand.

Shop matching plugs (nipples) →