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SAE-AS5179 — LOCKNUT,TUBE FITTING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

SAE-AS5179: LOCKNUT,TUBE FITTING.

The LOCKNUT,TUBE FITTING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 7075 NUT, nut_style: TUBE FITTING LOCKNUT, nut_height: 0.281 INCHES NOMINAL IN, nut_length: 0.678 INCHES MINIMUM AND 0.691 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF). This part is cataloged in the U.S.

Government catalog under NSN 4730-00-833-7656, 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
SAE-AS5179
NSN: 4730-00-833-7656
NIINs: 008337656, 009295410, 012861958, 016984928
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 7075 NUT
nut_styleTUBE FITTING LOCKNUT
nut_height0.281 INCHES NOMINAL IN
nut_length0.678 INCHES MINIMUM AND 0.691 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
thread_directionRIGHT-HAND
surface_treatmentANODIZE NUT
width_across_flats0.678 INCHES MINIMUM AND 0.691 INCHES MAXIMUM IN
nominal_thread_size0.4375 INCHES IN
packing_recess_depth0.042 INCHES NOMINAL IN
end_item_identificationSPECIAL, AIR VEHICLE, AIRCRAFT
NSN4730-00-833-7656
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: SAE-AS5179 · 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: 1.922 INCHES MINIMUM AND 1.954 INCHES MAXIMUM IN
•
PACKING RECESS DIAMETER: 1.849 INCHES MINIMUM AND 1.859 INCHES MAXIMUM IN
•
THREAD SERIES: UN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.625 INCHES IN
•
NUT HEIGHT: 0.438 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
NUT STYLE: TUBE FITTING LOCKNUT
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.922 INCHES MINIMUM AND 1.954 INCHES MAXIMUM IN
PACKING RECESS DIAMETER1.849 INCHES MINIMUM AND 1.859 INCHES MAXIMUM IN
THREAD SERIESUN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.625 INCHES IN
NUT HEIGHT0.438 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
NUT STYLETUBE FITTING LOCKNUT
THREAD CLASS3B
THREAD QUANTITY PER INCH12
SUBSTITUTES & CROSS-REFERENCES 5
SAE-AS4841Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
AN6289K20Reference document
Same NSN cross-reference
Reference document — Secondary reference
4730PL2094303Reference document
Same NSN cross-reference
Reference document — Informative reference only
SAE AS54841Reference document
Same NSN cross-reference
Reference document — Secondary reference
157618230Same 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 SAE-AS5179?
SAE-AS5179 is a LOCKNUT,TUBE FITTING.
What parts can replace SAE-AS5179?
There are 5 known substitutes for SAE-AS5179: SAE-AS4841, AN6289K20, 4730PL2094303 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SAE-AS5179?
SAE-AS5179 is cataloged in the U.S. Government catalog under NSN 4730-00-833-7656. This indicates validated use in U.S. government and defense supply chains.
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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.