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81583 — PLATE ASSY

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

81583: PLATE ASSY.

The PLATE ASSY is a the manufacturer industrial component. Key specifications include material: PLASTIC, drive_type: SCREW SLOT, design_type: THREADED, thread_class: 3A A, overall_diameter: 1.000 INCHES NOMINAL IN, features_provided: SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-050-7657, 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
81583
NSN: 4730-00-050-7657
NIINs: 000507657, 002907231, 011930961
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 81982 — HYDRO-AIRE AEROSPACE CORP (USA)
SPECIFICATIONS
materialPLASTIC
drive_typeSCREW SLOT
design_typeTHREADED
thread_class3A A
overall_diameter1.000 INCHES NOMINAL IN
features_providedSHOULDER
thread_size_and_series/type_designator3/4-16 UNF
NSN4730-00-050-7657
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 81583 · 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
•
MALE END THREAD DIRECTION: RIGHT-HAND
•
MALE END SCREW THREAD SERIES DESIGNATOR: UN
•
FEMALE END SCREW THREAD SERIES DESIGNATOR: UNF
•
FEMALE END THREAD DIRECTION: RIGHT-HAND
•
MATERIAL: ALUMINUM ALLOY 2024
TECHNICAL CHARACTERISTICS
MALE END THREAD DIRECTIONRIGHT-HAND
MALE END SCREW THREAD SERIES DESIGNATORUN
FEMALE END SCREW THREAD SERIES DESIGNATORUNF
END ITEM IDENTIFICATIONHELICOPTER, CH-53A/D/E A
FEMALE END THREAD DIRECTIONRIGHT-HAND
MATERIALALUMINUM ALLOY 2024
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)Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 81583?
81583 is a PLATE ASSY.
What is the NSN for 81583?
81583 is cataloged in the U.S. Government catalog under NSN 4730-00-050-7657. 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.