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SMC One-Touch fitting.
[Features]
· Compact, lightweight
· Grease-free
[Applications]
· Use to pipe in the same direction from female thread.
Part Number
Configured Part Number is shown.

Male Connector: KQB2H outline drawings
(Unit: mm)
| Applicable tubing outer diameter (mm) | Connection thread R, M | Model | H (width across flats) | øDNote 1) | L | A* | M | Effective cross-sectional areaNote 2) (mm2) | Weight g |
|---|---|---|---|---|---|---|---|---|---|
| ø3.2 | M5 × 0.8 | KQB2H23-M5 | 8 | 8 | 16.5 | 13.5 | 12 | 3 | 3.4 |
| 1/8 | KQB2H23-01S | 10 | 15.4 | 12.3 | 3.4 | 6 | |||
| 1/4 | KQB2H23-02S | 14 | 21 | 16.3 | 17.8 | ||||
| ø4 | M5 × 0.8 | KQB2H04-M5 | 10 | 8.7 | 17.1 | 14.1 | 12.6 | 4 | 5.3 |
| 1/8 | KQB2H04-01S | 15.3 | 12.2 | 5.6 | 5.6 | ||||
| 1/4 | KQB2H04-02S | 14 | 20.9 | 16.2 | 17.2 | ||||
| ø6 | M5 × 0.8 | KQB2H06-M5 | 12 | 11.1 | 19.1 | 16.1 | 13.6 | 4 | 8 |
| 1/8 | KQB2H06-01S | 18.1 | 15 | 13.1 | 7.3 | ||||
| 1/4 | KQB2H06-02S | 14 | 20.8 | 16.1 | 15.2 | ||||
| 3/8 | KQB2H06-03S | 17 | 23 | 17.9 | 28.8 | ||||
| ø8 | 1/8 | KQB2H08-01S | 14 | 13.4 | 24.5 | 21.4 | 16.1 | 26.1 | 13.5 |
| 1/4 | KQB2H08-02S | 22.3 | 17.6 | ||||||
| 3/8 | KQB2H08-03S | 17 | 23.7 | 18.6 | 26 | ||||
| ø10 | 1/8 | KQB2H10-01S | 17 | 16.4 | 25.5 | 22.4 | 17 | 26.1 | 19.8 |
| 1/4 | KQB2H10-02S | 27.9 | 23.2 | 41.5 | 22.7 | ||||
| 3/8 | KQB2H10-03S | 23 | 17.9 | 21.6 | |||||
| 1/2 | KQB2H10-04S | 22 | 28.6 | 22.2 | 53.9 | ||||
| ø12 | 1/4 | KQB2H12-02S | 19 | 18.5 | 30.5 | 25.8 | 18.6 | 58.3 | 28.8 |
| 3/8 | KQB2H12-03S | 24.7 | 19.6 | 21.5 | |||||
| 1/2 | KQB2H12-04S | 22 | 28.7 | 22.3 | 47 | ||||
| ø16 | 3/8 | KQB2H16-03S | 24 | 24.6 | 33.6 | 28.5 | 20.8 | 81 | 48.3 |
| 1/2 | KQB2H16-04S | 29.5 | 23.1 | 113 | 39.2 |
Note 1) øD is the maximum diameter.
Note 2) Value of FEP tubing.
Value of nylon tubing for ø16 only.
Inch size × UNF/NPT thread, millimeter size × G thread
Applicable Tubing Size
ø3.2 to ø16, ø1/8" to ø1/2 "
Connection Thread
M, R, Rc, UNF, NPT, G
Fluid temperature
-5 to 150°C
Grease-free
Applicable tubing materials
FEP / PFA / Nylon / Soft nylon / Polyurethane / Polyolefin
Electroless nickel plated (brass parts)

Metal One-Touch Fitting KQB2 Series structural drawing
| No. | Part Name | Material |
|---|---|---|
| 1 | Release button | SUS304 |
| 2 | Guide 1 | SUS304 |
| 3 | Guide 2 | SUS304 |
| 4 | Chuck | SUS304 |
| 5 | Seal | Special FKM (Fluorine Coated) |
| 6 | Male Connector body | C3604 (electroless nickel plated) |
| 7 | Male Elbow body | SUS316 |
| 8 | O-Ring | Special FKM (Fluorine Coated) |
| 9 | Stud | C3604 (electroless nickel plated) |
| Tube materials | FEP / PFA / Nylon / Soft Nylon / Polyurethane / Polyolefin |
|---|---|
| Tube outer diameter | ø3.2, ø4, ø6, ø8, ø10, ø12, ø16 |
| Usable fluids | Air, water |
|---|---|
| Operating pressure rangeNote 1) | -100 kPa to 1 MPaNote 2) |
| Proof pressure | 3.0 MPa |
| Ambient and fluid temperatureNote 3) | -5 to 150°C (no freezing)Note 2) |
| Lubricant | Grease-free finish |
| Seal (thread portion) | With sealant |
Note 1) Do not use the fittings with a leak tester or for vacuum retention because they are not guaranteed for zero leakage.
Note 2) Check the operating pressure range and operating temperature range of the tube.
Note 3) It is recommended that you use the inner sleeve in the following conditions. (Except ø3.2)
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | Applicable Tube O.D.1 (φ) | Types of connection | Connection screw |
|---|---|---|---|---|---|---|---|
MYR 19.20 | 1 Piece(s) | 3 Day(s) | 1/8 | UNF | 10-32 | ||
MYR 19.57 | 1 Piece(s) | 5 Day(s) or more | 1/8 | NPT | 1/8 | ||
MYR 26.05 | 10 Piece(s) | 21 Day(s) | 1/8 | NPT | 1/4 | ||
MYR 23.85 | 1 Piece(s) | 5 Day(s) or more | 5/32 | UNF | 10-32 | ||
MYR 14.00 | 1 Piece(s) | 3 Day(s) | 5/32 | NPT | 1/8 | ||
MYR 19.20 | 10 Piece(s) | 10 Day(s) or more | 5/32 | NPT | 1/4 | ||
MYR 13.30 | 1 Piece(s) | 3 Day(s) | 4 | R | 1/8 | ||
MYR 16.27 | 1 Piece(s) | 5 Day(s) or more | 4 | R | 1/4 | ||
MYR 16.37 | 1 Piece(s) | 5 Day(s) or more | 4 | G | 1/8 | ||
MYR 25.94 | 10 Piece(s) | 10 Day(s) or more | 4 | G | 1/4 | ||
MYR 17.65 | 1 Piece(s) | 2 Day(s) | 4 | M | 5×0.8 | ||
MYR 16.77 | 1 Piece(s) | 22 Day(s) | 6 | R | 1/8 | ||
MYR 20.30 | 1 Piece(s) | 2 Day(s) | 6 | R | 1/4 | ||
MYR 24.28 | 1 Piece(s) | 2 Day(s) | 6 | R | 3/8 | ||
MYR 16.27 | 1 Piece(s) | 5 Day(s) or more | 6 | G | 1/8 | ||
MYR 22.07 | 1 Piece(s) | 5 Day(s) or more | 6 | G | 1/4 | ||
MYR 25.75 | 1 Piece(s) | 5 Day(s) or more | 6 | G | 3/8 | ||
MYR 15.60 | 1 Piece(s) | 3 Day(s) | 6 | M | 5×0.8 | ||
MYR 27.96 | 1 Piece(s) | 5 Day(s) or more | 1/4 | UNF | 10-32 | ||
MYR 15.60 | 1 Piece(s) | 3 Day(s) | 1/4 | NPT | 1/8 | ||
MYR 20.52 | 1 Piece(s) | 5 Day(s) or more | 1/4 | NPT | 1/4 | ||
MYR 23.32 | 1 Piece(s) | 5 Day(s) or more | 1/4 | NPT | 3/8 | ||
MYR 23.38 | 1 Piece(s) | 22 Day(s) | 8 | R | 1/8 | ||
MYR 23.38 | 1 Piece(s) | 2 Day(s) | 8 | R | 1/4 | ||
MYR 19.71 | 1 Piece(s) | 5 Day(s) or more | 8 | R | 3/8 | ||
MYR 18.68 | 1 Piece(s) | 5 Day(s) or more | 8 | G | 1/8 | ||
MYR 25.18 | 1 Piece(s) | 5 Day(s) or more | 8 | G | 1/4 | ||
MYR 30.63 | 10 Piece(s) | 10 Day(s) or more | 8 | G | 3/8 | ||
MYR 28.51 | 1 Piece(s) | 5 Day(s) or more | 5/16 | NPT | 1/8 | ||
MYR 20.62 | 10 Piece(s) | 10 Day(s) or more | 5/16 | NPT | 1/4 | ||
MYR 23.20 | 10 Piece(s) | 10 Day(s) or more | 5/16 | NPT | 3/8 | ||
MYR 22.54 | 1 Piece(s) | 5 Day(s) or more | 10 | R | 1/8 | ||
MYR 23.70 | 1 Piece(s) | 3 Day(s) | 10 | R | 1/4 | ||
MYR 29.57 | 1 Piece(s) | 2 Day(s) | 10 | R | 3/8 | ||
MYR 27.75 | 1 Piece(s) | 5 Day(s) or more | 10 | R | 1/2 | ||
MYR 28.64 | 1 Piece(s) | 5 Day(s) or more | 10 | G | 1/8 | ||
MYR 28.34 | 1 Piece(s) | 5 Day(s) or more | 10 | G | 1/4 | ||
MYR 36.52 | 1 Piece(s) | 5 Day(s) or more | 10 | G | 3/8 | ||
MYR 42.09 | 1 Piece(s) | 5 Day(s) or more | 10 | G | 1/2 | ||
MYR 28.70 | 1 Piece(s) | 5 Day(s) or more | 3/8 | NPT | 1/8 | ||
MYR 28.70 | 10 Piece(s) | 10 Day(s) or more | 3/8 | NPT | 1/4 | ||
MYR 28.47 | 1 Piece(s) | 5 Day(s) or more | 3/8 | NPT | 3/8 | ||
MYR 33.50 | 1 Piece(s) | 5 Day(s) or more | 3/8 | NPT | 1/2 | ||
MYR 35.32 | 1 Piece(s) | 32 Day(s) | 12 | R | 1/4 | ||
MYR 28.20 | 1 Piece(s) | 43 Day(s) | 12 | R | 3/8 | ||
MYR 29.63 | 1 Piece(s) | 5 Day(s) or more | 12 | R | 1/2 | ||
MYR 32.85 | 1 Piece(s) | 5 Day(s) or more | 12 | G | 1/4 | ||
MYR 33.57 | 1 Piece(s) | 5 Day(s) or more | 12 | G | 3/8 | ||
MYR 43.13 | 1 Piece(s) | 5 Day(s) or more | 12 | G | 1/2 | ||
MYR 41.08 | 1 Piece(s) | 5 Day(s) or more | 1/2 | NPT | 1/4 | ||
MYR 38.57 | 10 Piece(s) | 10 Day(s) or more | 1/2 | NPT | 3/8 | ||
MYR 40.70 | 1 Piece(s) | 5 Day(s) or more | 1/2 | NPT | 1/2 | ||
MYR 51.51 | 1 Piece(s) | 5 Day(s) or more | 16 | R | 3/8 | ||
MYR 46.75 | 1 Piece(s) | 5 Day(s) or more | 16 | R | 1/2 | ||
MYR 62.51 | 10 Piece(s) | 10 Day(s) or more | 16 | G | 3/8 | ||
MYR 64.58 | 10 Piece(s) | 10 Day(s) or more | 16 | G | 1/2 | ||
MYR 17.80 | 1 Piece(s) | 3 Day(s) | 3.2 | R | 1/8 | ||
MYR 27.86 | 1 Piece(s) | 5 Day(s) or more | 3.2 | R | 1/4 | ||
MYR 18.60 | 1 Piece(s) | 3 Day(s) | 3.2 | M | 5×0.8 |
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| Fitting Type | Screw Mount Direction | Applicable Fluid | Water / Air | Screw Mounting, Direction | Half Union |
|---|---|---|---|---|---|
| Body Material | SUS304 | Types | Single-Action / Screw | Thread Material | C3604 (Electroless nickel plating) |
| Application | Standard/Mini | Packing, Material of O-Ring | Special FKM (Fluorine Coating) | Operating Temperature(°C) | -5::150 |
| Number of Connection Tubes(piece) | 1 |
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