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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.

How it compares

Measured against everything we stock in Print & Scan Accessories, at today’s prices. Recalculated every night.

Price $4.99
Cheaper than about 99% of the 5,855 comparable items (median $91.99).

Specifications

Product
Brand nameUnique 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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