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Products/Festo/153621
Festo 153621 Push-in fitting QSF-1/4-1/4-U
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Festo

153621

Push-in fitting QSF-1/4-1/4-U

This Festo industrial component, part number 153621, features a standard size with a 4 mm nominal size and a push/pull design structure configured for assembly in any position. Engineered with a nickel-plated brass housing, POM release ring, NBR tubing seal, and non-corrosive high-alloy steel hose clamping segment, the unit operates with filtered compressed air or vacuum at working pressures ranging from -0.95 to 10 bar across ambient temperatures of -10 to 60 °C. The fitting includes an NPT1/4-18 pneumatic connection for 1/4" outside diameter tubing, a grey release ring, a maximum tightening torque of 14 Nm, and a CRC corrosion resistance classification of 1 while maintaining RoHS conformity and Germanischer Lloyd authorization in a container size of 1. Submit the exact part number, quantity, and application requirements to request a quote.

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Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.

Manufacturer
Festo
Part number
153621
Data verification
Manufacturer evidence reviewed

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Exact part-number verificationTechnical properties are matched to 153621.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.

Verified configuration

Technical Specifications

Size
Standard
Nominal size
4 mm
Assembly position
Any
Container size
1
Design structure
Push/pull principle
Working pressure
-0.95 ... 10 bar
Temperature dependent working pressure
-0.95 ... 10 bar
Operating medium
Filtered compressed air | Vacuum
Corrosion resistance classification CRC
1
Ambient temperature
-10 ... 60 °C
Authorization
Germanischer Lloyd
Max. tightening torque
14 Nm
Pneumatic connection
NPT1/4-18 | for tubing, 1/4" outside diameter
color of release ring
Grey
Materials note
Conforms to RoHS
Materials information, housing
Brass | Nickel plated
Release ring material data
POM
Materials information for tubing seal
NBR
Hose clamping segment material data
High alloy steel, non-corrosive

Engineering context

Identification and RFQ Guidance

Confirm the exact configuration

Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.

What to include in your RFQ

Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.

Technical verification

Our sourcing response is prepared against Festo 153621. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.