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820-5348328 — PACKING NUT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

820-5348328: PACKING NUT.

The PACKING NUT is a the manufacturer industrial component. Key specifications include criticality_code_justification: ZZZY, reference_number_differentiating_characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-144-9334, 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
820-5348328
NSN: 4730-01-144-9334
NIINs: 011449334, 015288078
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
criticality_code_justificationZZZY
reference_number_differentiating_characteristicsMATERIAL WILL BE IN ACCORDANCE WITH NAVICP ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
NSN4730-01-144-9334
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 820-5348328 · 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
•
LENGTH TO SHOULDER: 1.000 INCHES MINIMUM AND 1.025 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.750 INCHES NOMINAL IN
•
STYLE DESIGNATOR: KNURLED, INTERNAL THREAD, SHOULDERED
•
THREAD DIRECTION: RIGHT-HAND
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
THREAD SIZE: 2-1/2-12
•
SCREW THREAD SERIES DESIGNATOR: UN
TECHNICAL CHARACTERISTICS
LENGTH TO SHOULDER1.000 INCHES MINIMUM AND 1.025 INCHES MAXIMUM IN
THREAD LENGTH0.750 INCHES NOMINAL IN
STYLE DESIGNATORKNURLED, INTERNAL THREAD, SHOULDERED
OVERALL LENGTH1.375 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
CASEHARDENING INDICATORNOT CASEHARDENED
THREAD SIZE2-1/2-12
SCREW THREAD SERIES DESIGNATORUN
THREAD CLASS3B
MAJOR UNTHREADED OUTSIDE DIAMETER2.938 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 3
1258143 PIECE 6Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
1258143Reference document
Same NSN cross-reference
Reference document — Secondary reference
1258143 PC 6Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 820-5348328?
820-5348328 is a PACKING NUT.
What parts can replace 820-5348328?
There are 3 known substitutes for 820-5348328: 1258143 PIECE 6, 1258143, 1258143 PC 6. Substitute compatibility should be verified for your specific system.
What is the NSN for 820-5348328?
820-5348328 is cataloged in the U.S. Government catalog under NSN 4730-01-144-9334. 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.