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5821054 — DISK,SOLID,PLAIN

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

5821054: DISK,SOLID,PLAIN.

The DISK,SOLID,PLAIN is a the manufacturer industrial component. Key specifications include diameter: 0.613 INCHES MINIMUM AND 0.623 INCHES MAXIMUM IN, material: STEEL COMP 302, thickness: 0.022 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN, surface_treatment: PASSIVATE, end_item_identification: AFTERBODY SECTION,TORPEDO MK50, material_document_and_classification: MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-327-8180, 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
5821054
NSN: 5340-01-327-8180
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
diameter0.613 INCHES MINIMUM AND 0.623 INCHES MAXIMUM IN
materialSTEEL COMP 302
thickness0.022 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN
surface_treatmentPASSIVATE
end_item_identificationAFTERBODY SECTION,TORPEDO MK50
material_document_and_classificationMIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE
surface_treatment_document_and_classificationQQ-P-35, TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE
NSN5340-01-327-8180
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5821054 MFR: OEM ⚠ 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
KEY FEATURES
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35, TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE
•
DIAMETER: 0.613 INCHES MINIMUM AND 0.623 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE
•
MATERIAL: STEEL COMP 302
•
THICKNESS: 0.022 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35, TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE
DIAMETER0.613 INCHES MINIMUM AND 0.623 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE
END ITEM IDENTIFICATIONAFTERBODY SECTION,TORPEDO MK50
MATERIALSTEEL COMP 302
THICKNESS0.022 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
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 5821054?
5821054 is a DISK,SOLID,PLAIN.
What is the NSN for 5821054?
5821054 is cataloged in the U.S. Government catalog under NSN 5340-01-327-8180. 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.