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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.
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Festo
153903
Push-in fitting QSM-1/8-1/8-U
The Festo 153903 is a mini industrial component featuring a 1.9 mm nominal size and a push/pull design structure with a grey release ring. Constructed with a nickel-plated brass housing, NBR tubing seal, POM release ring, and non-corrosive high-alloy steel hose clamping segment, this part operates within a temperature range of -10 to 60 °C and pressures from -0.95 to 10 bar using compressed air according to ISO8573-1:2010 [7:-:-]. It utilizes a coated screw-in stud seal with a maximum tightening torque of 8 Nm, accommodates a 1/8" outside diameter pneumatic connection for port 2, achieves corrosion resistance classification CRC 1, holds Germanischer Lloyd authorization, and conforms to RoHS materials notes while supporting lubricated operation in any assembly position. Submit the exact part number, quantity, and application requirements to receive a formal quotation.
Request pricing and availabilityCommercial response within one business day for your destination and required quantity.
Request a QuoteWhy no listed price?
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
- 153903
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 153903.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Size
- Mini
- Nominal size
- 1.9 mm
- Type of seal on screw-in stud
- coating
- Assembly position
- Any
- Container size
- 1
- Design structure
- Push/pull principle
- Operating pressure complete temperature range
- -0.95 ... 10 bar
- Operating medium
- Compressed air in accordance with ISO8573-1:2010 [7:-:-]
- Note on operating and pilot medium
- Lubricated operation possible
- Corrosion resistance classification CRC
- 1
- Ambient temperature
- -10 ... 60 °C
- Authorization
- Germanischer Lloyd
- Max. tightening torque
- 8 Nm
- Pneumatic connection, port
- 2 for tubing, 1/8" 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
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 153903. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.