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Brass and blue plastic push-fit fitting, 17.5mm tall, pack of five

Unique-Bargains

Unique-Bargains BSPT1/8 Push-Fit Fitting 4mm 1.75mm 5pcs

SKU CH-0ZG1-F05A9

Push-to-connect brass and plastic fitting accepts 4 mm OD PTFE tube for 1.75 mm filament with a PT1/8 thread, supplied in a pack of five

  • Push-fit design enables tool-free tube changes
  • Brass and plastic construction resists wear and heat
  • 75 mm filament compatibility fits common 3D printers
  • 4 mm outer-diameter tube grip ensures secure PTFE connection
  • 5 mm compact height suits tight extruder assemblies

Push-Fit Connector for 1.75 mm Filament

These brass-and-plastic fittings accept 4 mm OD PTFE tubing and are sized for 1.75 mm filament paths. They thread into a PT1/8 port on the extruder or hot-end assembly. The push-to-connect design locks the tube in place without tools. A pack contains five identical pieces.

Suited for Bowden extruder upgrades

Builders converting a direct-drive system to Bowden or replacing worn couplers will find the PT1/8 thread and 4 mm tube bore match common RepRap-style hardware. The fittings do not fit 3 mm filament paths or larger-diameter tubing. Users needing a different thread pitch or a non-push-fit retention method should look elsewhere.

PT1/8 thread with 6.8 mm brass-end bore

The male thread measures PT1/8 and the brass end presents a 6.8 mm inner diameter. Overall height is 17.5 mm. This single specification determines whether the coupler matches the threaded port and tube size on the target printer.

Highlights

  • Push-fit design enables tool-free tube changes
  • Brass and plastic construction resists wear and heat
  • 75 mm filament compatibility fits common 3D printers
  • 4 mm outer-diameter tube grip ensures secure PTFE connection
  • 5 mm compact height suits tight extruder assemblies

Specifications

BrandUnique Bargains

Questions about this item

What size PTFE tube must I already have for these BSPT1/8 push-fit fittings to work?

You need a 4 mm outer-diameter PTFE tube that guides 1.75 mm filament, matching the blue end of each fitting.

Will the PT1/8 thread on these fittings screw into the standard threaded port on my current extruder?

Yes, the brass end has a PT1/8 thread, which is the common size for many extruder heat-breaks and hot-end blocks.

How can I confirm the fittings are seated correctly after I push the tube in?

The tube should sit fully home with no visible gap at the blue collar, and a gentle tug should not pull it free.

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