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431-90404 — PLUG,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

431-90404: PLUG,PIPE.

The PLUG,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, body_type: SOLID, exterior_color: BLACK OVERALL, drive_end_style: RECESSED HEXAGON, connection_style: PLAIN, thread_direction: RIGHT-HAND EXTERNAL. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-028-5105, 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
431-90404
NSN: 4730-01-028-5105
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 9F512 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV HYDRAULIC PUMP DIVISION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_typeSOLID
exterior_colorBLACK OVERALL
drive_end_styleRECESSED HEXAGON
connection_stylePLAIN
thread_directionRIGHT-HAND EXTERNAL
surface_treatmentOXIDE OVERALL
nominal_thread_size0.250 INCHES EXTERNAL IN
thread_quantity_per_inch18 EXTERNAL
thread_series_designatorNPT EXTERNAL
nominal_pipe_size_for_which_designed0.250 INCHES IN
NSN4730-01-028-5105
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 431-90404 · 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 FOR WHICH DESIGNED: 0.250 INCHES IN
•
CONNECTION STYLE: PLAIN
•
DRIVE END STYLE: RECESSED HEXAGON
•
THREAD DIRECTION: RIGHT-HAND EXTERNAL
•
NOMINAL THREAD SIZE: 0.250 INCHES EXTERNAL IN
•
EXTERIOR COLOR: BLACK OVERALL
•
SURFACE TREATMENT: OXIDE OVERALL
•
BODY TYPE: SOLID
TECHNICAL CHARACTERISTICS
NOMINAL PIPE SIZE FOR WHICH DESIGNED0.250 INCHES IN
CONNECTION STYLEPLAIN
DRIVE END STYLERECESSED HEXAGON
THREAD DIRECTIONRIGHT-HAND EXTERNAL
NOMINAL THREAD SIZE0.250 INCHES EXTERNAL IN
EXTERIOR COLORBLACK OVERALL
SURFACE TREATMENTOXIDE OVERALL
BODY TYPESOLID
THREAD QUANTITY PER INCH18 EXTERNAL
MATERIALSTEEL OVERALL
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 2
S3-ML-290-A ITEM 3Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
4730PL0680605Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 431-90404?
431-90404 is a PLUG,PIPE.
What parts can replace 431-90404?
There are 2 known substitutes for 431-90404: S3-ML-290-A ITEM 3, 4730PL0680605. Substitute compatibility should be verified for your specific system.
What is the NSN for 431-90404?
431-90404 is cataloged in the U.S. Government catalog under NSN 4730-01-028-5105. 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.