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R6904-32 — EXPANSION JOINT,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

R6904-32: EXPANSION JOINT,PIPE.

The EXPANSION JOINT,PIPE is a the manufacturer industrial component. Key specifications include material: IRON CAST FLANGE, joint_type: SINGLE, design_type: CORRUGATED ELEMENT, overall_length: 1.562 INCHES NOMINAL IN, bolt_hole_diameter: 0.625 INCHES NOMINAL IN, end_connection_type: FLANGED. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-110-6579, 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
R6904-32
NSN: 4730-01-110-6579
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 50599 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV STRATOFLEX PRODUCT DIVISION (USA)
SPECIFICATIONS
materialIRON CAST FLANGE
joint_typeSINGLE
design_typeCORRUGATED ELEMENT
overall_length1.562 INCHES NOMINAL IN
bolt_hole_diameter0.625 INCHES NOMINAL IN
bolt_hole_quantity4
end_connection_typeFLANGED
bolt_circle_diameter6.000 INCHES NOMINAL IN
end_item_identificationVACUUM TANK ABOARD 378 FT WHEC COAST GUARD VESSELS FT
traverse_maximum_length0.250 INCHES IN
working_pressure_rating150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
equalization_characteristicSELF-EQUALIZING
NSN4730-01-110-6579
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: R6904-32 · 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: 2.000 INCHES IN
•
DESIGN TYPE: CORRUGATED ELEMENT
•
EQUALIZATION CHARACTERISTIC: SELF-EQUALIZING
•
END CONNECTION TYPE: FLANGED
•
TRAVERSE MAXIMUM LENGTH: 0.250 INCHES IN
•
BOLT HOLE DIAMETER: 0.625 INCHES NOMINAL IN
•
WORKING PRESSURE RATING: 150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
TECHNICAL CHARACTERISTICS
NOMINAL PIPE SIZE DESIGNATION2.000 INCHES IN
DESIGN TYPECORRUGATED ELEMENT
EQUALIZATION CHARACTERISTICSELF-EQUALIZING
END CONNECTION TYPEFLANGED
TRAVERSE MAXIMUM LENGTH0.250 INCHES IN
BOLT HOLE DIAMETER0.625 INCHES NOMINAL IN
OVERALL LENGTH1.562 INCHES NOMINAL IN
WORKING PRESSURE RATING150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
BOLT HOLE QUANTITY4
BOLT CIRCLE DIAMETER6.000 INCHES NOMINAL IN
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 1
2502596-003Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is R6904-32?
R6904-32 is a EXPANSION JOINT,PIPE.
What parts can replace R6904-32?
There is 1 known substitute for R6904-32: 2502596-003. Substitute compatibility should be verified for your specific system.
What is the NSN for R6904-32?
R6904-32 is cataloged in the U.S. Government catalog under NSN 4730-01-110-6579. 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.