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FA0421 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

FA0421: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 185.0 MILLIMETERS NOMINAL MM, length: 900.0 MILLIMETERS NOMINAL MM, peripheral_shape_style: RECTANGLE, NO HOLES, end_item_identification: 2420-01-538-8287,TRACTOR,WHEELED,HIGH SPEED, cross-sectional_shape_style: SQUARE OR RECTANGULAR RECESS, part_name_assigned_by_controlling_agency: COVER 2 ASSY. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-554-9983, 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
FA0421
NSN: 5340-01-554-9983
FSC: 5340 — Hardware, Commercial
CAGE: 1N5S7 — CRITICAL SOLUTIONS INTERNATIONAL, LLC (USA)
SPECIFICATIONS
width185.0 MILLIMETERS NOMINAL MM
length900.0 MILLIMETERS NOMINAL MM
peripheral_shape_styleRECTANGLE, NO HOLES
end_item_identification2420-01-538-8287,TRACTOR,WHEELED,HIGH SPEED
cross-sectional_shape_styleSQUARE OR RECTANGULAR RECESS
part_name_assigned_by_controlling_agencyCOVER 2 ASSY
NSN5340-01-554-9983
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: FA0421 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
•
LENGTH: 900.0 MILLIMETERS NOMINAL MM
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE OR RECTANGULAR RECESS
•
PERIPHERAL SHAPE STYLE: RECTANGLE, NO HOLES
•
WIDTH: 185.0 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
LENGTH900.0 MILLIMETERS NOMINAL MM
CROSS-SECTIONAL SHAPE STYLESQUARE OR RECTANGULAR RECESS
PERIPHERAL SHAPE STYLERECTANGLE, NO HOLES
WIDTH185.0 MILLIMETERS NOMINAL MM
PART NAME ASSIGNED BY CONTROLLING AGENCYCOVER 2 ASSY
END ITEM IDENTIFICATION2420-01-538-8287,TRACTOR,WHEELED,HIGH SPEED
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: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is FA0421?
FA0421 is a COVER,ACCESS.
What is the NSN for FA0421?
FA0421 is cataloged in the U.S. Government catalog under NSN 5340-01-554-9983. 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.