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Small brass push-fit male connector with 4 mm tube end and 1/8 inch BSPP thread

Legris

Legris 3101 04 10 Male Connector 4mm OD 290 PSI

SKU CH-HD4K-J1GWJ MPN 3101

A push-fit brass adapter connects 4 mm tubing to a 1/8 in MBSPP thread at up to 290 psi and 175 °F

  • TypeDrain Components
  • MaterialHAWA
  • Push-fit connection enables quick vacuum line assembly
  • Brass construction resists corrosion in plumbing systems
  • 290 psi rating handles high-pressure drain applications
  • 175 °F tolerance suits hot fluid environments
  • 1/8 in BSPP thread mates with standard fittings

Push-fit adapter for 4 mm tubing

The Legris 3101 04 10 male connector joins 4 mm outer-diameter tubing to a 1/8 in MBSPP port using a push-to-connect design. Brass construction suits vacuum and fluid lines in automotive and light-industrial plumbing. Each fitting measures 11 1/2 mm overall length and is supplied in packs of ten.

Brass body rated to 290 psi and 175 °F

The fitting withstands a maximum operating pressure of 290 psi and a maximum operating temperature of 175 Degrees F. Brass material resists corrosion while the push-fit seal engages without tools, keeping assembly noise and effort low. No pre-applied thread sealant is included, so installers apply their preferred compound.

Connects metric tube to imperial thread

Side A accepts 4 mm push-to-connect tubing; side B provides a 1/8 in MBSPP male thread for direct port engagement. The compact length frees space in tight manifolds and eliminates the need for separate adapters. Builders requiring a different tube diameter or thread size must select an alternative fitting.

Highlights

  • Push-fit connection enables quick vacuum line assembly
  • Brass construction resists corrosion in plumbing systems
  • 290 psi rating handles high-pressure drain applications
  • 175 °F tolerance suits hot fluid environments
  • 1/8 in BSPP thread mates with standard fittings

Specifications

TypeDrain Components
MaterialHAWA
BrandLegris
Model3101 04 10

Questions about this item

How do I install the 4 mm push-to-connect side and the 1/8 in MBSPP thread side, and what step do people often miss?

Push the 4 mm tube firmly into the push-to-connect port until it seats, then thread the 1/8 in MBSPP end into the mating port using a wrench on the hex flats; the step often missed is not pushing the tube past the first resistance to fully engage the collet.

What maintenance or replacement will this brass connector need over time?

Inspect the brass body and threads for corrosion or deformation; replace the connector if the push-to-connect grip no longer holds the 4 mm tube securely or if the thread seal shows leakage.

Which limit appears first during sustained use — the 290 psi pressure rating or the 175 °F temperature rating?

The 175 °F maximum operating temperature is typically reached before the 290 psi pressure limit in continuous hot-fluid applications, so monitor fluid temperature to stay within the rated range.

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