PartsTable
Technical Data Sheet
Download PDF

1549416 — INVERTED NUT,TUBE COUPLING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1549416: INVERTED NUT,TUBE COUPLING.

The INVERTED NUT,TUBE COUPLING is a the manufacturer industrial component. Key specifications include material: STEEL, overall_length: 0.6 INCHES NOMINAL IN, smallest_inside_diameter: 0.4 INCHES NOMINAL IN, screw_thread_series_designator: UN, part_name_assigned_by_controlling_agency: INVERTED NUT. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-595-0811, 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
1549416
NSN: 4730-01-595-0811
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL
overall_length0.6 INCHES NOMINAL IN
smallest_inside_diameter0.4 INCHES NOMINAL IN
screw_thread_series_designatorUN
part_name_assigned_by_controlling_agencyINVERTED NUT
NSN4730-01-595-0811
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1549416 · 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
•
SCREW THREAD SERIES DESIGNATOR: UN
•
MATERIAL: STEEL
•
SMALLEST INSIDE DIAMETER: 0.4 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL LENGTH0.6 INCHES NOMINAL IN
SCREW THREAD SERIES DESIGNATORUN
PART NAME ASSIGNED BY CONTROLLING AGENCYINVERTED NUT
MATERIALSTEEL
SMALLEST INSIDE DIAMETER0.4 INCHES NOMINAL IN
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
No demilitarization required
Ready to buy 1549416?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 1549416?
1549416 is a INVERTED NUT,TUBE COUPLING.
What is the NSN for 1549416?
1549416 is cataloged in the U.S. Government catalog under NSN 4730-01-595-0811. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 1549416

✓ 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.