PartsTable
Technical Data Sheet
5821-1 ✓ Verified by PartsTable
Techair · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The TUBE,EXTENSION,DRAIN is a Techair industrial component. Key specifications include fastener_length: 8.0 MILLIMETERS NOMINAL MM, thread_direction: RIGHT-HAND, end_item_identification: PRC-F500(C) MANPACK STATION VHF RADIO, nominal_thread_diameter: 2.0 MILLIMETERS MM, thread_series_designator: ISO M, thread_pitch_in_millimeters: 4.0. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-411-0545, 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
MRO MRO_GENERAL 5821-1
NSN: 5340-00-411-0545
FSC: 5340
CAGE: 15280 — NORTHROP GRUMMAN SYSTEMS CORPORATION DIV ES DEFENSIVE SYSTEMS DIVISION (USA)
SPECIFICATIONS
fastener_length8.0 MILLIMETERS NOMINAL MM
thread_directionRIGHT-HAND
end_item_identificationPRC-F500(C) MANPACK STATION VHF RADIO
nominal_thread_diameter2.0 MILLIMETERS MM
thread_series_designatorISO M
thread_pitch_in_millimeters4.0
NSN5340-00-411-0545
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5821-1 MFR: Techair ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
7677Interchangeable
interchangeable cross-reference
interchangeable
076778Interchangeable
interchangeable cross-reference
interchangeable
H7176NB-8Interchangeable
interchangeable cross-reference
interchangeable
58211Interchangeable
interchangeable cross-reference
interchangeable
49070-04Interchangeable
interchangeable cross-reference
interchangeable
58211-3Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5821-1?
5821-1 is a TUBE,EXTENSION,DRAIN manufactured by Techair. It is classified as a MRO (MRO_GENERAL).
What parts can replace 5821-1?
There are 7 known substitutes for 5821-1: 7677, 076778, H7176NB-8 and 4 more. Substitute compatibility should be verified for your specific system.
Is 5821-1 still available?
5821-1 is currently cancelled.
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