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258A676-2 — PANEL,BLANK

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

258A676-2: PANEL,BLANK.

The PANEL,BLANK is a the manufacturer industrial component. Key specifications include material: ALUMINUM, end_item_identification: AIRCRAFT, HERCULES C-130, material_document_and_classification: MIL-STD-13O IDENTIFICATION MARKING OF U.S. MILITARY PROPERTY MIL STD SINGLE MATERIAL RESPONSE, part_name_assigned_by_controlling_agency: PANEL - COVER STOWAGE.

This part is cataloged in the U.S. Government catalog under NSN 5340-01-574-5643, 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
258A676-2
NSN: 5340-01-574-5643
FSC: 5340 — Hardware, Commercial
CAGE: 03640 — LOCKHEED MARTIN CORPORATION DIV ROTARY AND MISSION SYSTEMS (USA)
SPECIFICATIONS
materialALUMINUM
end_item_identificationAIRCRAFT, HERCULES C-130
material_document_and_classificationMIL-STD-13O IDENTIFICATION MARKING OF U.S. MILITARY PROPERTY MIL STD SINGLE MATERIAL RESPONSE
part_name_assigned_by_controlling_agencyPANEL - COVER STOWAGE
NSN5340-01-574-5643
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 258A676-2 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-STD-13O IDENTIFICATION MARKING OF U.S. MILITARY PROPERTY MIL STD SINGLE MATERIAL RESPONSE
•
MATERIAL: ALUMINUM
TECHNICAL CHARACTERISTICS
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-STD-13O IDENTIFICATION MARKING OF U.S. MILITARY PROPERTY MIL STD SINGLE MATERIAL RESPONSE
PART NAME ASSIGNED BY CONTROLLING AGENCYPANEL - COVER STOWAGE
END ITEM IDENTIFICATIONAIRCRAFT, HERCULES C-130
MATERIALALUMINUM
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 258A676-2?
258A676-2 is a PANEL,BLANK.
What is the NSN for 258A676-2?
258A676-2 is cataloged in the U.S. Government catalog under NSN 5340-01-574-5643. 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.