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AS5179J5 — LOCKNUT,TUBE FITTING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

AS5179J5: LOCKNUT,TUBE FITTING.

The LOCKNUT,TUBE FITTING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, nut_style: TUBE FITTING LOCKNUT, nut_height: 0.281 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNF, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-540-2017, 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
AS5179J5
NSN: 4730-00-540-2017
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
nut_styleTUBE FITTING LOCKNUT
nut_height0.281 INCHES NOMINAL IN
thread_class3B
thread_seriesUNF
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats0.750 INCHES NOMINAL IN
nominal_thread_size0.500 INCHES IN
packing_recess_depth0.042 INCHES NOMINAL IN
packing_recess_diameter0.670 INCHES NOMINAL IN
thread_quantity_per_inch20
NSN4730-00-540-2017
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AS5179J5 · 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: 0.750 INCHES NOMINAL IN
•
PACKING RECESS DIAMETER: 0.670 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNF
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763,CLASS 304 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.500 INCHES IN
•
NUT HEIGHT: 0.281 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.750 INCHES NOMINAL IN
PACKING RECESS DIAMETER0.670 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNF
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,CLASS 304 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.500 INCHES IN
NUT HEIGHT0.281 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
NUT STYLETUBE FITTING LOCKNUT
SUBSTITUTES & CROSS-REFERENCES 4
10108401Reference document
Same NSN cross-reference
Reference document — Informative reference only
AN6289J5Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS5179Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS4841Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AS5179J5?
AS5179J5 is a LOCKNUT,TUBE FITTING.
What parts can replace AS5179J5?
There are 4 known substitutes for AS5179J5: 10108401, AN6289J5, AS5179 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AS5179J5?
AS5179J5 is cataloged in the U.S. Government catalog under NSN 4730-00-540-2017. 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.