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29903-1 — EXPANSION JOINT,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

29903-1: EXPANSION JOINT,PIPE.

The EXPANSION JOINT,PIPE is a the manufacturer industrial component. Key specifications include design_type: CORRUGATED ELEMENT, overall_length: 22.000 INCHES NOMINAL IN, end_connection_type: WELDED, working_pressure_rating: 2.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS, equalization_characteristic: SELF-EQUALIZING, nominal_pipe_size_designation: 16.000 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-138-7477, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
29903-1
NSN: 4730-01-138-7477
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 70510 — HYSPAN PRECISION PRODUCTS, INC. (USA)
SPECIFICATIONS
design_typeCORRUGATED ELEMENT
overall_length22.000 INCHES NOMINAL IN
end_connection_typeWELDED
working_pressure_rating2.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
equalization_characteristicSELF-EQUALIZING
nominal_pipe_size_designation16.000 INCHES IN
NSN4730-01-138-7477
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 29903-1 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
NOMINAL PIPE SIZE DESIGNATION: 16.000 INCHES IN
•
DESIGN TYPE: CORRUGATED ELEMENT
•
EQUALIZATION CHARACTERISTIC: SELF-EQUALIZING
•
END CONNECTION TYPE: WELDED
•
WORKING PRESSURE RATING: 2.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
TECHNICAL CHARACTERISTICS
NOMINAL PIPE SIZE DESIGNATION16.000 INCHES IN
DESIGN TYPECORRUGATED ELEMENT
EQUALIZATION CHARACTERISTICSELF-EQUALIZING
END CONNECTION TYPEWELDED
OVERALL LENGTH22.000 INCHES NOMINAL IN
WORKING PRESSURE RATING2.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 29903-1?
29903-1 is a EXPANSION JOINT,PIPE.
What is the NSN for 29903-1?
29903-1 is cataloged in the U.S. Government catalog under NSN 4730-01-138-7477. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.