PartsTable
Technical Data Sheet
Download PDF

648383-000 — PACKING NUT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

648383-000: PACKING NUT.

The PACKING NUT is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 360, thread_size: 5/8IN-24 IN, thread_class: 2A A, thread_length: 0.230 INCHES NOMINAL IN, overall_length: 0.425 INCHES NOMINAL IN, style_designator: HEXAGON, EXTERNAL THREAD, INVERTED FLARE. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-516-4038, 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
648383-000
NSN: 4730-00-516-4038
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 12436 — BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. DIV BAE SYSTEMS INFORMATION & ELECTRONIC SYSTEMS INTEGRATION INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY 360
thread_size5/8IN-24 IN
thread_class2A A
thread_length0.230 INCHES NOMINAL IN
overall_length0.425 INCHES NOMINAL IN
style_designatorHEXAGON, EXTERNAL THREAD, INVERTED FLARE
thread_directionRIGHT-HAND
width_across_flats0.625 INCHES NOMINAL IN
screw_thread_locationEXTERNAL
casehardening_indicatorNOT CASEHARDENED
smallest_inside_diameter0.438 INCHES NOMINAL IN
screw_thread_series_designatorUNEF
NSN4730-00-516-4038
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 648383-000 · 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: 0.625 INCHES NOMINAL IN
•
THREAD LENGTH: 0.230 INCHES NOMINAL IN
•
STYLE DESIGNATOR: HEXAGON, EXTERNAL THREAD, INVERTED FLARE
•
THREAD DIRECTION: RIGHT-HAND
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
THREAD SIZE: 5/8IN-24 IN
•
SCREW THREAD SERIES DESIGNATOR: UNEF
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.625 INCHES NOMINAL IN
THREAD LENGTH0.230 INCHES NOMINAL IN
STYLE DESIGNATORHEXAGON, EXTERNAL THREAD, INVERTED FLARE
OVERALL LENGTH0.425 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
CASEHARDENING INDICATORNOT CASEHARDENED
THREAD SIZE5/8IN-24 IN
SCREW THREAD SERIES DESIGNATORUNEF
THREAD CLASS2A A
SCREW THREAD LOCATIONEXTERNAL
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 3
2053083Reference document
Same NSN cross-reference
Reference document — Secondary reference
648383Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
2053083-8Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
Ready to buy 648383-000?
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 648383-000?
648383-000 is a PACKING NUT.
What parts can replace 648383-000?
There are 3 known substitutes for 648383-000: 2053083, 648383, 2053083-8. Substitute compatibility should be verified for your specific system.
What is the NSN for 648383-000?
648383-000 is cataloged in the U.S. Government catalog under NSN 4730-00-516-4038. 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 — 648383-000

✓ 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.