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P289A08 — CAP,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

P289A08: CAP,TUBE.

The CAP,TUBE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 7075 OVERALL, thread_class: 3B INTERNAL, connection_style: SOCKET W/ ONE BRAZING RING, style_designator: CAP, TUBE, FLARELESS, thread_direction: RIGHT-HAND INTERNAL, surface_treatment: ANODIZE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-525-2984, 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
P289A08
NSN: 4730-01-525-2984
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 66774 — PRECISION AIRCRAFT MACHINING COMPANY, INC. DBA PAMCO DIV PRECISION AIRCRAFT MACHINING CO DBA PAMCO (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 7075 OVERALL
thread_class3B INTERNAL
connection_styleSOCKET W/ ONE BRAZING RING
style_designatorCAP, TUBE, FLARELESS
thread_directionRIGHT-HAND INTERNAL
surface_treatmentANODIZE OVERALL
operating_pressure4000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
nominal_thread_size1.312 INCHES INTERNAL IN
seat_nominal_radius0.062 INCHES IN
end_item_identificationC-17A AIRCRAFT A
thread_quantity_per_inch12 INTERNAL
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) INTERNAL
NSN4730-01-525-2984
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: P289A08 · 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
•
CONNECTION STYLE: SOCKET W/ ONE BRAZING RING
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.500 INCHES NOMINAL IN
•
SEAT NOMINAL RADIUS: 0.062 INCHES IN
•
STYLE DESIGNATOR: CAP, TUBE, FLARELESS
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-A-8825 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OPERATING PRESSURE: 4000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
•
THREAD DIRECTION: RIGHT-HAND INTERNAL
•
NOMINAL THREAD SIZE: 1.312 INCHES INTERNAL IN
TECHNICAL CHARACTERISTICS
CONNECTION STYLESOCKET W/ ONE BRAZING RING
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.500 INCHES NOMINAL IN
SEAT NOMINAL RADIUS0.062 INCHES IN
STYLE DESIGNATORCAP, TUBE, FLARELESS
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-A-8825 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OPERATING PRESSURE4000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
THREAD DIRECTIONRIGHT-HAND INTERNAL
NOMINAL THREAD SIZE1.312 INCHES INTERNAL IN
SURFACE TREATMENTANODIZE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYCAP,TUBE,PRESSURE SEAL
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
7D0289A08Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is P289A08?
P289A08 is a CAP,TUBE.
What parts can replace P289A08?
There is 1 known substitute for P289A08: 7D0289A08. Substitute compatibility should be verified for your specific system.
What is the NSN for P289A08?
P289A08 is cataloged in the U.S. Government catalog under NSN 4730-01-525-2984. 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.