Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
SMC Push-Fit Adapter Fitting: 4 mm OD x 6 mm OD Size, Push-to-Connect x Push-to-Connect - Polybutylene & Brass Tube Fittings
SMCPolybutylene & Brass Tube Fittings

SMC Push-Fit Adapter Fitting: 4 mm OD x 6 mm OD Size, Push-to-Connect x Push-to-Connect

The SMC Push-Fit Adapter Fitting (MPN KQ2R04-06A) is a brass push-to-connect x push-to-connect fitting for 4 mm OD x 6 mm OD tubing. 3G Electric interprets your demand for this SMC component, sourcing it across our…

SKU 3G-OTH-489108

Brand
SMC
Item
Push-Fit Adapter Fitting: 4 mm OD x 6 mm OD Size, Push-to-Connect x Push-to-Connect
Category
Polybutylene & Brass Tube Fittings
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

SMC
Manufacturer Part Number
KQ2R04-06A
Type
Push-to-Connect x Push-to-Connect, Brass
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

SMC Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SMC Push-Fit Adapter Fitting (MPN KQ2R04-06A) is a brass push-to-connect x push-to-connect fitting for 4 mm OD x 6 mm OD tubing. 3G Electric interprets your demand for this SMC component, sourcing it across our 14 industrial departments, with specialist depth in pneumatics and controls as an authorised distributor.

Frequently Asked Questions

What is the SMC Push-Fit Adapter Fitting KQ2R04-06A used for?

The SMC KQ2R04-06A is a brass push-to-connect adapter fitting used to join 4 mm OD and 6 mm OD polybutylene or nylon tubing in pneumatic systems. It provides a secure, leak-free connection without tools, ideal for automation, packaging, and industrial control applications.

What are the specifications of the SMC KQ2R04-06A?

The SMC KQ2R04-06A is a push-to-connect x push-to-connect brass fitting with a 4 mm OD x 6 mm OD size. It is designed for polybutylene and brass tube fittings, offering reliable sealing in pneumatic circuits. The manufacturer part number is KQ2R04-06A.

Where to buy the SMC KQ2R04-06A worldwide?

3G Electric supplies the SMC KQ2R04-06A worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source this fitting across 14 departments, including pneumatics and controls, and deliver to your facility. Contact us for availability and lead time.

How to install the SMC push-fit adapter fitting?

To install the SMC KQ2R04-06A, cut tubing square, push it fully into the fitting until it stops, then pull gently to confirm lock. For removal, press the collet evenly and pull the tube out. Ensure tubing is clean and free of burrs for a proper seal.

Used in

Common applications for SMC
Automotive assembly — SMC ZP3 flat vacuum pads for handling small components in pick-and-place robots
Semiconductor manufacturing — SMC ZM series vacuum generators with needle valves for precise wafer handling
Food packaging — SMC AW-D series filter regulators for clean compressed air in pneumatic actuators
General industrial automation — SMC AS2211F speed control valves for regulating cylinder speeds in conveyor systems
Vacuum conveying — SMC ZH series box-type vacuum generators for material transport in packaging lines
Machine tool coolant systems — SMC ZF series in-line filters to protect vacuum ejectors from debris

SMC Products

3G Electric supplies SMC polybutylene & brass tube fittings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from SMC

View all SMC parts →
SMC Push-Fit Wye Fitting: 8 mm OD x 8 mm OD x 8 mm OD Size, Polybutylene Terephthalate, White (MPN KQ2U08-00A). Key specifications — Brand: SMC.
SMC
SMC Push-Fit Wye Fitting: 8 mm OD x 8 mm OD x 8 mm OD Size, Polybutylene Terephthalate, White (MPN KQ2U08-00A). Key specifications — Brand: SMC.
SMC Push-Fit Elbow Fitting: 1/8 in OD x 1/4 in Pipe Size, Push-to-Connect x MNPT, Brass, White (MPN KQ2L01-35AS). Key specifications — Brand: SMC; Thread Size A: 1/4".
SMC
SMC Push-Fit Elbow Fitting: 1/8 in OD x 1/4 in Pipe Size, Push-to-Connect x MNPT, Brass, White (MPN KQ2L01-35AS). Key specifications — Brand: SMC; Thread Size A: 1/4".
SMC Push-Fit Adapter Fitting: 1/2 in OD x 3/8 in Pipe Size, Push-to-Connect x FNPT, Brass, Brass (MPN KQ2F13-36A). Key specifications — Brand: SMC; Thread Size A: 3/8".
SMC
SMC Push-Fit Adapter Fitting: 1/2 in OD x 3/8 in Pipe Size, Push-to-Connect x FNPT, Brass, Brass (MPN KQ2F13-36A). Key specifications — Brand: SMC; Thread Size A: 3/8".
SMC Push-Fit Elbow Fitting: 1/8 in OD x 1/4 in Pipe Size, Push-to-Connect x FNPT, Brass, White (MPN KQ2LF01-35A). Key specifications — Brand: SMC; Thread Size A: 1/4".
SMC
SMC Push-Fit Elbow Fitting: 1/8 in OD x 1/4 in Pipe Size, Push-to-Connect x FNPT, Brass, White (MPN KQ2LF01-35A). Key specifications — Brand: SMC; Thread Size A: 1/4".
SMC Push-Fit Tee Fitting: 1/4 in Pipe x 10 mm OD x 10 mm OD Size, 49 3/16 mm Overall Lg, White (MPN KQ2Y10-02AS). Key specifications — Brand: SMC.
SMC
SMC Push-Fit Tee Fitting: 1/4 in Pipe x 10 mm OD x 10 mm OD Size, 49 3/16 mm Overall Lg, White (MPN KQ2Y10-02AS). Key specifications — Brand: SMC.
SMC Push-Fit Fitting: 3/16 in OD x 1/4 in OD Size, Push-to-Connect x Push-to-Connect, Brass, Brass (MPN KQ2H05-07A). Key specifications — Brand: SMC.
SMC
SMC Push-Fit Fitting: 3/16 in OD x 1/4 in OD Size, Push-to-Connect x Push-to-Connect, Brass, Brass (MPN KQ2H05-07A). Key specifications — Brand: SMC.
SMC Push-Fit Adapter Fitting: 5/16 in OD x 1/4 in Pipe Size, Push-to-Connect x BSPT, Brass, Brass (MPN KQ2H09-02AS). Key specifications — Brand: SMC; Thread Size A: 1/4".
SMC
SMC Push-Fit Adapter Fitting: 5/16 in OD x 1/4 in Pipe Size, Push-to-Connect x BSPT, Brass, Brass (MPN KQ2H09-02AS). Key specifications — Brand: SMC; Thread Size A: 1/4".
SMC Push-Fit Adapter Fitting: 10 mm OD x 1/4 in Pipe Size, Push-to-Connect x BSPT, Brass, Brass (MPN KQ2F10-02A). Key specifications — Brand: SMC; Thread Size A: 1/4".
SMC
SMC Push-Fit Adapter Fitting: 10 mm OD x 1/4 in Pipe Size, Push-to-Connect x BSPT, Brass, Brass (MPN KQ2F10-02A). Key specifications — Brand: SMC; Thread Size A: 1/4".