Filter By Category

Categories

  • Abrasives, Cutting, HolemakingAbrasives, Cutting, Holemaking
    Cutoff Wheels
    Drill Bits & Accessories
    Flap Wheels & Discs
    Grinding Wheels
    Sanding & Surface Conditioning
    Wire Wheels & Brushes
    More...
  • Battery ProductsBattery Products
    Accessories
    Anderson Connectors
    Battery Terminals & Lugs
    Battery, Welding Cable
    More...
  • Bulbs, BeamsBulbs, Beams
    Halogen Replacement
    Mini Bulbs
    Sealed Beams
    More…
  • ChemicalsChemicals
    Adhesives & Sealants
    Cleaners
    Lubricants
    Paints
    More…
  • FastenersFasteners
    Bolts
    Nuts
    Pins
    Rivets
    Screws
    Washers
    More…
  • Fittings, Valves, AdaptersFittings, Valves, Adapters
    Brass
    Hydraulic
    Pneumatic
    More...
  • Fuse ProductsFuse Products
    Circuit Breakers
    Fuse Blocks & Holders
    Fuses
    Relays & Soleniods
    More...
  • KitsKits
    Fasteners
    Fittings
    Fuse
    Securing & Bundling
    Terminal
    More…
  • Securing, BundlingSecuring, Bundling
    Cable Ties & Mounts
    Clips & Clamps
    Grommets & Plugs
    Heat Shrink Tubing
    Tape, Adhesive, Velcro
    More…
  • StorageStorage
    Base
    Bearing Rack
    Bin
    Bin Rail
    Cabinet
    Cable Tie Rack
    Caddy
    Compartment Bin
    Compartment Box
    Compartment Box Insert
    Display Rack
    Divider
    Enclosure
    Hinge Bar
    Rack
    Shelf
    Wire Rack
    Workstation
  • SwitchesSwitches
    Disconnect
    Ignition
    Push-Button
    Push-Pull
    Rocker
    Toggle
    More…
  • TerminalsTerminals
    Butt Connectors
    GM, AMP, Deutsch, Specialty
    Quick Disconnects
    Ring Terminals
    Scotchlok, Wire Nuts
    More...
  • ToolsTools
  • Trailer ProductsTrailer Products
    Adapters & Cords
    Breakaway, Brake Controllers
    Trailer Connectors
    More...
  • Truck, Warning LightsTruck, Warning Lights
    Back-Up, Utility
    Marker, Clearance
    Stop, Turn & Tail Lights
    Warning & Strobe Lights
    Work Lights
    More…
  • Wire, Cable, HoseWire, Cable, Hose
    Battery, Welding Cable
    Jacketed Wire
    Power Cord
    Primary Wire
    Trailer Cable
  • MiscMisc
    • Contact Sales

    Shop All
    All CategoriesContact Sales
    trigger

    3/8″ x 1/4″ Female Steel Pipe Reducing Coupling – SAE 140138, 3,000 PSI, NPT Threads

    Part #: MM-5000-6-4

    This 3/8″ x 1/4″ Female Pipe Reducing Coupling is made from durable steel and designed for high-pressure pipe connections. Featuring 3/8″-18 and 1/4″-18 NPT female threads, this coupling meets SAE 140138 dimensional standards for industrial-grade reliability. Rated for a maximum pressure of 3,000 PSI and temperature tolerance up to 375°F, it’s ideal for hydraulic, pneumatic, and general-purpose fluid systems requiring compact pipe size transitions.