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29903-5 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The EXPANSION JOINT,PIPE is a the manufacturer industrial component. Key specifications include joint_type: SINGLE, design_type: CORRUGATED ELEMENT, overall_length: 31.000 INCHES NOMINAL IN, end_connection_type: WELDED, traverse_maximum_length: 32.020 INCHES IN, working_pressure_rating: 2.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-182-7936, 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
29903-5
NSN: 4730-01-182-7936
FSC: 4730
CAGE: 30009 — HYSPAN PRECISION PRODUCTS, INC. DBA HYSPAN PRECISION PRODUCTS INC (USA)
SPECIFICATIONS
joint_typeSINGLE
design_typeCORRUGATED ELEMENT
overall_length31.000 INCHES NOMINAL IN
end_connection_typeWELDED
traverse_maximum_length32.020 INCHES IN
working_pressure_rating2.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
equalization_characteristicSELF-EQUALIZING
nominal_pipe_size_designation16.000 INCHES IN
NSN4730-01-182-7936
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 29903-5 · 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
•
EQUALIZATION CHARACTERISTIC: SELF-EQUALIZING
•
END CONNECTION TYPE: WELDED
•
TRAVERSE MAXIMUM LENGTH: 32.020 INCHES IN
•
JOINT TYPE: SINGLE
•
WORKING PRESSURE RATING: 2.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
•
DESIGN TYPE: CORRUGATED ELEMENT
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL PIPE SIZE DESIGNATION16.000 INCHES IN
EQUALIZATION CHARACTERISTICSELF-EQUALIZING
END CONNECTION TYPEWELDED
TRAVERSE MAXIMUM LENGTH32.020 INCHES IN
JOINT TYPESINGLE
WORKING PRESSURE RATING2.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
OVERALL LENGTH31.000 INCHES NOMINAL IN
DESIGN TYPECORRUGATED ELEMENT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
AMS-QQ-A-200/3Interchangeable
interchangeable cross-reference
interchangeable
QQ-A-200/3Interchangeable
interchangeable cross-reference
interchangeable
2-900-3Interchangeable
interchangeable cross-reference
interchangeable
4-957-1Interchangeable
interchangeable cross-reference
interchangeable
290035Interchangeable
interchangeable cross-reference
interchangeable
WA4-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 29903-5?
29903-5 is a EXPANSION JOINT,PIPE.
What parts can replace 29903-5?
There are 8 known substitutes for 29903-5: AMS-QQ-A-200/3, QQ-A-200/3, 2-900-3 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 29903-5?
29903-5 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-182-7936. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026