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AN6289K24 — LOCKNUT,TUBE FITTING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

AN6289K24: LOCKNUT,TUBE FITTING.

The LOCKNUT,TUBE FITTING is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: TUBE FITTING LOCKNUT, thread_class: 3B, thread_series: UN, thread_direction: RIGHT-HAND, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-286-9689, 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
AN6289K24
NSN: 4730-00-286-9689
NIINs: 002869689, 008046853
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleTUBE FITTING LOCKNUT
thread_class3B
thread_seriesUN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats2.168 INCHES MINIMUM AND 2.208 INCHES MAXIMUM IN
nominal_thread_size1.875 INCHES IN
packing_recess_depth0.054 INCHES NOMINAL IN
packing_recess_diameter2.104 INCHES NOMINAL IN
thread_quantity_per_inch12
nominal_tube_outside_diameter1.500 INCHES IN
NSN4730-00-286-9689
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AN6289K24 · 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
•
WIDTH ACROSS FLATS: 2.188 INCHES NOMINAL IN
•
PACKING RECESS DIAMETER: 2.099 INCHES MINIMUM AND 2.109 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763,TYPE 316 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.875 INCHES IN
•
NUT HEIGHT: 0.438 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS2.188 INCHES NOMINAL IN
PACKING RECESS DIAMETER2.099 INCHES MINIMUM AND 2.109 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,TYPE 316 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.875 INCHES IN
NUT HEIGHT0.438 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
NUT STYLETUBE FITTING LOCKNUT
SUBSTITUTES & CROSS-REFERENCES 4
AS5179Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS4841Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS5179K24Reference document
Same NSN cross-reference
Reference document — Secondary reference
SAE-AS4841Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AN6289K24?
AN6289K24 is a LOCKNUT,TUBE FITTING.
What parts can replace AN6289K24?
There are 4 known substitutes for AN6289K24: AS5179, AS4841, AS5179K24 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AN6289K24?
AN6289K24 is cataloged in the U.S. Government catalog under NSN 4730-00-286-9689. 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.