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AC044088 — LOCKNUT,TUBE FITTING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

AC044088: 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, nut_height: 0.374 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN, thread_class: 3B, thread_series: UNJEF, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-185-8055, 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
AC044088
NSN: 4730-01-185-8055
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: K1037 — MEGGITT AEROSPACE LIMITED (GBR)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleTUBE FITTING LOCKNUT
nut_height0.374 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNJEF
thread_directionRIGHT-HAND
width_across_flats0.493 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
nominal_thread_size0.375 INCHES IN
packing_recess_depth0.030 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
packing_recess_diameter0.393 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN
thread_quantity_per_inch32
NSN4730-01-185-8055
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AC044088 · 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: 0.493 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
PACKING RECESS DIAMETER: 0.393 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN
•
THREAD SERIES: UNJEF
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
NUT HEIGHT: 0.374 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN
•
NUT STYLE: TUBE FITTING LOCKNUT
•
THREAD CLASS: 3B
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.493 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
PACKING RECESS DIAMETER0.393 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN
THREAD SERIESUNJEF
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.375 INCHES IN
NUT HEIGHT0.374 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN
NUT STYLETUBE FITTING LOCKNUT
THREAD CLASS3B
THREAD QUANTITY PER INCH32
MATERIALSTEEL CORROSION RESISTING OVERALL
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 AC044088?
AC044088 is a LOCKNUT,TUBE FITTING.
What is the NSN for AC044088?
AC044088 is cataloged in the U.S. Government catalog under NSN 4730-01-185-8055. 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.