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Technical Data Sheet
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2828E — PACKING NUT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

2828E: PACKING NUT.

The PACKING NUT is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, thread_size: 13/16IN-20 IN, thread_class: 2B, thread_length: 0.453 INCHES NOMINAL IN, overall_length: 0.625 INCHES NOMINAL IN, style_designator: KNURLED, INTERNAL THREAD, SHOULDERED. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-720-0385, 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
2828E
NSN: 4730-00-720-0385
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 76364 — MILWAUKEE VALVE CO, INC DIV MILWAUKEE VALVE COMPANY, LLC (USA)
SPECIFICATIONS
materialCOPPER ALLOY
thread_size13/16IN-20 IN
thread_class2B
thread_length0.453 INCHES NOMINAL IN
overall_length0.625 INCHES NOMINAL IN
style_designatorKNURLED, INTERNAL THREAD, SHOULDERED
thread_directionRIGHT-HAND
length_to_shoulder0.516 INCHES NOMINAL IN
screw_thread_locationINTERNAL
casehardening_indicatorNOT CASEHARDENED
smallest_inside_diameter0.306 INCHES MINIMUM AND 0.326 INCHES MAXIMUM IN
screw_thread_series_designatorUNEF
NSN4730-00-720-0385
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2828E · 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: 0.516 INCHES NOMINAL IN
•
THREAD LENGTH: 0.453 INCHES NOMINAL IN
•
STYLE DESIGNATOR: KNURLED, INTERNAL THREAD, SHOULDERED
•
THREAD DIRECTION: RIGHT-HAND
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
THREAD SIZE: 13/16IN-20 IN
•
SCREW THREAD SERIES DESIGNATOR: UNEF
TECHNICAL CHARACTERISTICS
LENGTH TO SHOULDER0.516 INCHES NOMINAL IN
THREAD LENGTH0.453 INCHES NOMINAL IN
STYLE DESIGNATORKNURLED, INTERNAL THREAD, SHOULDERED
OVERALL LENGTH0.625 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
CASEHARDENING INDICATORNOT CASEHARDENED
THREAD SIZE13/16IN-20 IN
SCREW THREAD SERIES DESIGNATORUNEF
THREAD CLASS2B
MAJOR UNTHREADED OUTSIDE DIAMETER0.938 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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2828E?
2828E is a PACKING NUT.
What is the NSN for 2828E?
2828E is cataloged in the U.S. Government catalog under NSN 4730-00-720-0385. 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.