We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black glass-filled nylon plug-in reducer, 4 mm tube to 6 mm stem, pack of 10

Legris

Legris 3166 04 06 Plug-In Reducer 4mm x 6mm Pack of 10

SKU CH-G3F6-7VD8K MPN 3166

Plug-in reducer connects 4 mm tube to 6 mm stem, rated to 290 PSI and 175 °F, glass-filled nylon, pack of 10

  • TypeDrain Components
  • Reduces 4 mm tube to 6 mm stem for flexible plumbing connections
  • Withstands up to 290 PSI for reliable high-pressure performance
  • Operates from -4 °F to 175 °F across wide temperature ranges
  • Glass-filled nylon construction resists corrosion and chemical wear
  • Pack of 10 fittings covers multiple installation points

Application and purpose

The Legris 3166 04 06 plug-in reducer joins a 4 mm tube to a 6 mm stem in pneumatic or fluid circuits. It suits maintenance engineers and OEM assemblers who need a compact, push-to-connect transition without threading tools.

Installation context

The glass-filled nylon body tolerates pressures up to 290 PSI and temperatures from -4 to 175 °F, so it fits directly into existing airline or coolant layouts that operate inside those limits. The push-in design frees up bench time because no sealant, clamps or spanners are required for a secure seal.

Pack contents

Each pack supplies ten identical reducers, letting a technician complete multiple connection points or keep spares in a service kit. The uniform black colour coding helps identify the fitting size at a glance during assembly or fault finding.

Highlights

  • Reduces 4 mm tube to 6 mm stem for flexible plumbing connections
  • Withstands up to 290 PSI for reliable high-pressure performance
  • Operates from -4 °F to 175 °F across wide temperature ranges
  • Glass-filled nylon construction resists corrosion and chemical wear
  • Pack of 10 fittings covers multiple installation points

Specifications

TypeDrain Components
BrandLegris
Model3166 04 06

Questions about this item

What is the maximum pressure the 3166 reducer can handle before leaking?

The reducer is rated for a maximum pressure of 290 PSI, so sustained use above that limit risks leaks or failure.

Does the glass-filled nylon body get too hot or degrade when fluid runs near the 175 °F upper limit all day?

The material is rated to 175 °F; at that temperature it remains structurally sound, though the fitting will feel hot to the touch.

Which tubing sizes must I already have to connect this 4 mm × 6 mm reducer?

You need 4 mm inside-diameter tube for the plug-in end and 6 mm outside-diameter stem for the other side.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.