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Push-fit fitting envelopes: 4 / 6 / 8 mm tube, G1/8 and G1/4 thread stubs
What are the dimensions of a 6 mm push-fit fitting? · Hardware · basis: Push-fit (push-to-connect) envelope: socket = PU tube OD, 12 deep; BSPP thread stub at the G major diameter (G1/8 Ø9.73, G1/4 Ø13.16)
Long Earth Society build part. Transfer ports between hot and cold spools on the LES demonstrators. The engines
Exact dimensions. Every file is drawn at true size with no printing tolerance. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your printer's or process's clearance before making the part. Mating features
- sizes
- 4 in table
Notes
- Each file is an envelope of a straight push-fit fitting: a Ø(tube OD + 8) × 14 body, a 2 mm collar on top, and an 8 mm thread stub below; 24 mm overall.
- The tube socket is drawn at the PU tube OD exactly (Ø4, Ø6, Ø8) and 12 mm deep, with a through bore of Ø2, Ø4 or Ø6.
- Thread stubs are plain cylinders at the BSPP major diameter: G1/8 Ø9.73, G1/4 Ø13.16; threads are not modelled.
- Sizes: 4 mm tube / G1/8, 6 mm / G1/8, 6 mm / G1/4, 8 mm / G1/4.
Sizes
| file | tube_od_mm | socket_depth_mm | thread | stub_od_mm | overall_mm |
|---|---|---|---|---|---|
| pushfit-4mm-g1-8 | 4 | 12 | G1/8 | 9.73 | 24 |
| pushfit-6mm-g1-8 | 6 | 12 | G1/8 | 9.73 | 24 |
| pushfit-6mm-g1-4 | 6 | 12 | G1/4 | 13.16 | 24 |
| pushfit-8mm-g1-4 | 8 | 12 | G1/4 | 13.16 | 24 |
Mating features
Drawn at the exact size. Open press, slide, run and socket features by your process's clearance; leave designed gaps and clamp fits as drawn.
| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| tube socket | Ø4 / Ø6 / Ø8 × 12 | PU tube OD | press | pushfit-* |
| thread stub | G1/8 Ø9.73 / G1/4 Ø13.16 | female BSPP port | designed | pushfit-* |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Wikipedia | Hose barb | web | CC BY-SA 4.0 (text) |
| Wikipedia | Push-fit fitting | web | CC BY-SA 4.0 (text) |
| McMaster-Carr | Tubing (free STEP per part, for your own design use; no redistribution) | STEP, PDF | McMaster-Carr site terms verify |
| Long Earth Society | Engine and rig builds | web, video | LES site |
Free files
★ Free files 4 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| pushfit-4mm-g1-8 | push-fit fitting envelope: body Ø12 × 14, release collet Ø8 × 2, Ø4 tube socket 12 deep from the collet face, G1/8 thread stub (Ø9.73 major) × 8 | STEP · STL |
| pushfit-6mm-g1-8 | push-fit fitting envelope: body Ø14 × 14, release collet Ø10 × 2, Ø6 tube socket 12 deep from the collet face, G1/8 thread stub (Ø9.73 major) × 8 | STEP · STL |
| pushfit-6mm-g1-4 | push-fit fitting envelope: body Ø14 × 14, release collet Ø10 × 2, Ø6 tube socket 12 deep from the collet face, G1/4 thread stub (Ø13.16 major) × 8 | STEP · STL |
| pushfit-8mm-g1-4 | push-fit fitting envelope: body Ø16 × 14, release collet Ø12 × 2, Ø8 tube socket 12 deep from the collet face, G1/4 thread stub (Ø13.16 major) × 8 | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=push-fit-fittings
How it fits
Goes in or on
BSP male thread envelopes 1/8 to 1 inG1/8 or G1/4 stub into a female BSPP portConnects to
PU pneumatic tube 4 to 12 mm ODtube OD into the socket drawn at the ODAlternatives
Hose barbs for 2, 3, 4, 6 and 8 mm ID tubefor soft silicone tubeYou might also need
Questions
What thread is on a 6 mm push-fit fitting?
Usually G1/8 or G1/4 BSPP; the stubs here are Ø9.73 and Ø13.16, the G major diameters.
How deep does the tube go into a push-fit?
The socket is drawn 12 mm deep at the tube OD.