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59QEA26P3 — COUPLING ASSEMBLY,SELF-SEALING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

59QEA26P3: COUPLING ASSEMBLY,SELF-SEALING.

The COUPLING ASSEMBLY,SELF-SEALING is a the manufacturer industrial component. Key specifications include material: STEEL BODY, seat_angle: 37.0 DEGREES, connection_type: THREADED INTERNAL TUBE FIRST QUICK DISCONNECT END, connection_style: FLARE FIRST QUICK DISCONNECT END, style_designator: COUPLING ASSEMBLY, operating_pressure: 1750.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-971-5027, 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
59QEA26P3
NSN: 4730-00-971-5027
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 76040 — MACK TRUCKS INC PARTS OPN (USA)
SPECIFICATIONS
materialSTEEL BODY
seat_angle37.0 DEGREES
connection_typeTHREADED INTERNAL TUBE FIRST QUICK DISCONNECT END
connection_styleFLARE FIRST QUICK DISCONNECT END
style_designatorCOUPLING ASSEMBLY
operating_pressure1750.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.750 INCHES FIRST QUICK DISCONNECT END IN
end_item_identification10 TON 6X6 TRUCK TRACTOR, W/MIDSHIP
thread_series_designatorNPT FIRST QUICK DISCONNECT END
second_end_relationship_with_first_endIDENTICAL
nominal_outside_diameter_tube_accommodated0.750 INCHES FIRST QUICK DISCONNECT END IN
NSN4730-00-971-5027
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 59QEA26P3 · 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: FLARE FIRST QUICK DISCONNECT END
•
CONNECTION TYPE: THREADED INTERNAL TUBE FIRST QUICK DISCONNECT END
•
STYLE DESIGNATOR: COUPLING ASSEMBLY
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.750 INCHES FIRST QUICK DISCONNECT END IN
•
OPERATING PRESSURE: 1750.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
NOMINAL THREAD SIZE: 0.750 INCHES FIRST QUICK DISCONNECT END IN
•
SEAT ANGLE: 37.0 DEGREES
TECHNICAL CHARACTERISTICS
CONNECTION STYLEFLARE FIRST QUICK DISCONNECT END
CONNECTION TYPETHREADED INTERNAL TUBE FIRST QUICK DISCONNECT END
STYLE DESIGNATORCOUPLING ASSEMBLY
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.750 INCHES FIRST QUICK DISCONNECT END IN
OPERATING PRESSURE1750.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
NOMINAL THREAD SIZE0.750 INCHES FIRST QUICK DISCONNECT END IN
SEAT ANGLE37.0 DEGREES
END ITEM IDENTIFICATION10 TON 6X6 TRUCK TRACTOR, W/MIDSHIP
MATERIALSTEEL BODY
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 59QEA26P3?
59QEA26P3 is a COUPLING ASSEMBLY,SELF-SEALING.
What is the NSN for 59QEA26P3?
59QEA26P3 is cataloged in the U.S. Government catalog under NSN 4730-00-971-5027. 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.