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5978747 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

5978747: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 3.877 INCHES MINIMUM AND 3.887 INCHES MAXIMUM IN, length: 20.535 INCHES NOMINAL IN, material: PLASTIC, POLYETHYLENE (PP), corner_radius: 1.490 INCHES NOMINAL IN, hole_diameter: 0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN, body_thickness: 0.560 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-222-6967, 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
5978747
NSN: 5340-01-222-6967
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
width3.877 INCHES MINIMUM AND 3.887 INCHES MAXIMUM IN
length20.535 INCHES NOMINAL IN
materialPLASTIC, POLYETHYLENE (PP)
corner_radius1.490 INCHES NOMINAL IN
hole_diameter0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN
body_thickness0.560 INCHES NOMINAL IN
special_featuresBODY OUTSIDE RADIUS,10.470; MOUNTING HOLES COUNTERBORED,0.223 IN. MIN AND 0.233 IN. MAX DIA IN
securing_device_typeSPECIAL
peripheral_shape_styleRECTANGLE, MULTI HOLES
hole_quantity_along_width2
hole_quantity_along_length1
cross-sectional_shape_styleFLAT
NSN5340-01-222-6967
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5978747 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
•
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG WIDTH: 0.279 INCHES MINIMUM AND 0.284 INCHES MAXIMUM IN
•
CORNER RADIUS: 1.490 INCHES NOMINAL IN
•
LENGTH: 20.535 INCHES NOMINAL IN
•
DISTANCE BETWEEN HOLES ALONG LENGTH: 8.790 INCHES NOMINAL IN
•
HOLE QUANTITY ALONG LENGTH: 1
•
DISTANCE BETWEEN HOLES ALONG WIDTH: 3.320 INCHES NOMINAL IN
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: L-P-390 TY 3 CL H FED SPEC SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG WIDTH0.279 INCHES MINIMUM AND 0.284 INCHES MAXIMUM IN
CORNER RADIUS1.490 INCHES NOMINAL IN
LENGTH20.535 INCHES NOMINAL IN
DISTANCE BETWEEN HOLES ALONG LENGTH8.790 INCHES NOMINAL IN
HOLE QUANTITY ALONG LENGTH1
DISTANCE BETWEEN HOLES ALONG WIDTH3.320 INCHES NOMINAL IN
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
MATERIAL DOCUMENT AND CLASSIFICATIONL-P-390 TY 3 CL H FED SPEC SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLEFLAT
SECURING DEVICE TYPESPECIAL
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 5978747?
5978747 is a COVER,ACCESS.
What is the NSN for 5978747?
5978747 is cataloged in the U.S. Government catalog under NSN 5340-01-222-6967. 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.