One-Touch Fitting KQ2 Series Female Connector KQ2F

Caution
- The minimum order quantity varies depending on the selected model. Please check the quotation / order screen for details.
- See the catalog for details on materials and specifications.
- Product images may be representative images. Refer to the catalog for details.
Product Description
A one-touch fitting used to connect pipes in a single action from male threads such as those from pressure gauges.
[Features]
· A compact and lightweight fitting with improved tube insertion/removal.
· Select from 148 types of female connector. Can accommodate metric size and inch size tubing.
[See here for catalog]
· Applicable tube outer diameter (metric), Connection thread [M, Rc], Release button: oval (pp. 10) / circle (pp. 106)
· Applicable tube outer diameter (inches), Connection thread [UNF, NPT], Release button: oval (pp. 34) circle (pp. 138)
· Applicable tube outer diameter (metric), Connection thread [G], Release button: oval (pp. 60) circle (pp. 168)
[Applications]
· Can be used as a fitting for piping from male threads on pressure gauges, etc.
Female Connector KQ2F Specifications

Female Connector KQ2F dimensional drawing

Release button dimensions (Applicable for oval types only)
Applicable Tubing: Metric Size
| Applicable tube outer diameter mm | Connection thread M, Rc | Model | H (width across flats) | øD | Release Button Dimensions | L1 | L2 | M | Effective area (mm2) | Minimum hole diameter | Weight g | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| X | Y | Nylon | Urethane | ||||||||||
| ø3.2 | M3 × 0.5 | KQ2F23-M3□1 | 7 | 6.9 | 6.7 | 9.5 | 17.3 | 5.7 | 13.3 | 3 | 2.5 | 2.5 | 3.1 |
| M5 × 0.8 | KQ2F23-M5□1 | 7 | 6.9 | 6.7 | 9.5 | 19.7 | 5.7 | 13.3 | 3 | 2.5 | 2.5 | 3.3 | |
| ø4 | M3 × 0.5 | KQ2F04-M3□1 | 8 | 7.9 | 7.7 | 10 | 16.5 | 5.7 | 13.3 | 4 | 4 | 2.5 | 4.1 |
| M5 × 0.8 | KQ2F04-M5□1 | 8 | 7.9 | 7.7 | 10 | 19.6 | 5.7 | 13.3 | 4 | 4 | 3 | 4.5 | |
| 1/8 | KQ2F04-01□1 | 14 | 7.9 | 7.7 | 10 | 24.1 | 8.5 | 13.3 | 5.6 | 4 | 3 | 12 | |
| 1/4 | KQ2F04-02□1 | 17 | 7.9 | 7.7 | 10 | 29 | 12.9 | 13.3 | 5.6 | 4 | 3 | 21.5 | |
| ø6 | M5 × 0.8 | KQ2F06-M5□1 | 10 | 9.9 | 9.7 | 12 | 17.6 | 5.7 | 13.3 | 10 | 10 | 4.1 | 5.5 |
| 1/8 | KQ2F06-01□1 | 14 | 9.9 | 9.7 | 12 | 23.6 | 8.5 | 13.3 | 13.1 | 10.4 | 4.5 | 12.2 | |
| 1/4 | KQ2F06-02□1 | 17 | 9.9 | 9.7 | 12 | 28.5 | 12.9 | 13.3 | 13.1 | 10.4 | 4.5 | 21.6 | |
| 3/8 | KQ2F06-03□1 | 19 | 9.9 | 9.7 | 12 | 29.9 | 13.4 | 13.3 | 13.1 | 10.4 | 4.5 | 22.7 | |
Release button shape: oval
*□: A (Brass), N (Brass + electroless nickel plating)
| Applicable tube outer diameter mm | Connection thread Rc | Model | H (width across flats) | øD Note: | L1 | L2 | M | Effective area (mm2) | Minimum hole diameter | Weight g | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nylon | Urethane | ||||||||||
| ø3.2 | M3 × 0.5 | KQ2F23-M3□ | 7 | 6.9 | 17.3 | 5.7 | 13.3 | 3 | 2.5 | 2.5 | 3.1 |
| M5 × 0.8 | KQ2F23-M5□ | 7 | 6.9 | 19.7 | 5.7 | 13.3 | 3 | 2.5 | 2.5 | 3.3 | |
| ø4 | M3 × 0.5 | KQ2F04-M3□ | 8 | 7.9 | 16.5 | 5.7 | 13.3 | 4 | 4 | 2.5 | 4.1 |
| M5 × 0.8 | KQ2F04-M5□ | 8 | 7.9 | 19.6 | 5.7 | 13.3 | 4 | 4 | 3 | 4.5 | |
| 1/8 | KQ2F04-01□ | 14 | 7.9 | 24.1 | 8.5 | 13.3 | 5.6 | 4 | 3 | 12 | |
| 1/4 | KQ2F04-02□ | 17 | 7.9 | 29 | 12.9 | 13.3 | 5.6 | 4 | 3 | 21.5 | |
| ø6 | M5 × 0.8 | KQ2F06-M5□ | 10 | 9.9 | 17.6 | 5.7 | 13.3 | 10 | 10 | 4.1 | 5.5 |
| 1/8 | KQ2F06-01□ | 14 | 9.9 | 23.6 | 8.5 | 13.3 | 13.1 | 10.4 | 4.5 | 12.2 | |
| 1/4 | KQ2F06-02□ | 17 | 9.9 | 28.5 | 12.9 | 13.3 | 13.1 | 10.4 | 4.5 | 21.6 | |
| 3/8 | KQ2F06-03□ | 19 | 9.9 | 29.9 | 13.4 | 13.3 | 13.1 | 10.4 | 4.5 | 22.7 | |
Release button shape: circular
Note: øD is the maximum diameter.
* Refer to the manufacturer's catalog for other model numbers.
Applicable tubing: inch size
| Applicable tube outer diameter Inches | Connection thread UNF, NPT | Model | H (width across flats) | øD | Release Button Dimensions | L1 | L2 | M | Effective area (mm2) | Minimum hole diameter | Weight g | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| X | Y | Nylon | Urethane | ||||||||||
| ø1/8 | 10-32 UNF | KQ2F01-32□1 | 7 | 6.9 | 6.7 | 9.5 | 19.7 | 5.7 | 13.3 | 3 | 2.5 | 2.5 | 3.4 |
| 1/8 | KQ2F01-34□1 | 14.29 | 6.9 | 6.7 | 9.5 | 25 | 9.5 | 13.3 | 3 | 2.5 | 2.5 | 13.4 | |
| 1/4 | KQ2F01-35□1 | 17.46 | 6.9 | 6.7 | 9.5 | 29.8 | 13.3 | 13.3 | 3 | 2.5 | 2.5 | 24.4 | |
| ø5/32 | 10-32 UNF | KQ2F03-32□1 | 8 | 7.9 | 7.7 | 10 | 19.5 | 5.7 | 13.3 | 4 | 4 | 3 | 4.5 |
| 1/8 | KQ2F03-34□1 | 14.29 | 7.9 | 7.7 | 10 | 24.8 | 9.5 | 13.3 | 5.6 | 4 | 3 | 13.7 | |
| 1/4 | KQ2F03-35□1 | 17.46 | 7.9 | 7.7 | 10 | 29.7 | 13.3 | 13.3 | 5.6 | 4 | 3 | 24.7 | |
Release button shape: oval
| Applicable tube outer diameter Inches | Connection thread UNF, NPT | Model | H (width across flats) | øD Note: | L1 | L2 | M | Effective area (mm2) | Minimum hole diameter | Weight g | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nylon | Urethane | ||||||||||
| ø1/8 | 10-32 UNF | KQ2F01-32□ | 7 | 6.9 | 19.7 | 5.7 | 13.3 | 3 | 2.5 | 2.5 | 3.4 |
| 1/8 | KQ2F01-34□ | 14.29 | 6.9 | 25 | 9.5 | 13.3 | 3 | 2.5 | 2.5 | 13.4 | |
| 1/4 | KQ2F01-35□ | 17.46 | 6.9 | 29.8 | 13.3 | 13.3 | 3 | 2.5 | 2.5 | 24.4 | |
| ø5/32 | 10-32 UNF | KQ2F03-32□ | 8 | 7.9 | 19.5 | 5.7 | 13.3 | 4 | 4 | 3 | 4.5 |
| 1/8 | KQ2F03-34□ | 14.29 | 7.9 | 24.8 | 9.5 | 13.3 | 5.6 | 4 | 3 | 13.7 | |
| 1/4 | KQ2F03-35□ | 17.46 | 7.9 | 29.7 | 13.3 | 13.3 | 5.6 | 4 | 3 | 24.7 | |
Release button shape: circular
Note: øD is the maximum diameter.
* Refer to the manufacturer's catalog for other model numbers.

Main part.
| Body | C3604, PBT, PP, SUS303 |
|---|---|
| Stud | C3604 (thread part), SUS303 (thread part) |
| Chuck | SUS304 |
| Guide | SUS304 |
| Release button | POM |
| Seal, O-ring | NBR |
| Gasket | SUS304, NBR |
Materials.
| Tube materials | FEP, PFA, nylon, soft nylon, polyurethane |
|---|---|
| Tube outer diameter | ø3.2, ø4, ø6 |
Applicable tube.
| Usable fluids | Air, water | |
|---|---|---|
| Operating pressure range | -100 kPa to 1 MPa | |
| Guaranteed proof pressure (at 23°C) | 3 MPa | |
| Ambient temperature and fluid temperature | -5 to 60°C, For water: 0 to 40°C (no freezing) | |
| Thread | Mounting section | JIS B0203 (tapered pipe thread) JIS B0205 (metric coarse thread) |
| Nut section | JIS B0205 (metric fine thread) | |
| Thread part seal | Sealing agent included | |
Specifications.
*Applicable tubing: metric size / The oval type is listed. See the manufacturer's catalog for types other than the above.
Product usage precautions
Note 1: Fittings without a thread portion and with all resin bodies are copper free specifications.
Note 2: The surge pressure must be under the maximum operating pressure.
Note 3: Do not use the fittings with a leak tester or for vacuum retention because they are not guaranteed for zero leakage.