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8449378 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

8449378: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 4.760 INCHES MINIMUM AND 4.800 INCHES MAXIMUM IN, length: 5.540 INCHES MINIMUM AND 5.580 INCHES MAXIMUM IN, material: ALUMINUM ALLOY 356.0, corner_radius: 0.060 INCHES NOMINAL IN, hole_diameter: 0.180 INCHES NOMINAL IN, body_thickness: 0.355 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-202-7739, 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
8449378
NSN: 5340-01-202-7739
FSC: 5340 — Hardware, Commercial
CAGE: 19204 — ARMY, UNITED STATES DEPARTMENT OF THE DBA ROCK ISLAND ARSENAL JMTC (USA)
SPECIFICATIONS
width4.760 INCHES MINIMUM AND 4.800 INCHES MAXIMUM IN
length5.540 INCHES MINIMUM AND 5.580 INCHES MAXIMUM IN
materialALUMINUM ALLOY 356.0
corner_radius0.060 INCHES NOMINAL IN
hole_diameter0.180 INCHES NOMINAL IN
body_thickness0.355 INCHES NOMINAL IN
flange_thickness0.125 INCHES NOMINAL IN
special_featuresFINISH,COLOR WHITE 27875; 4 HOLES,0.180 DIA,CSK 100 DEG BY 0.344 DIA REVERSE SIDE; USED IN POWER SUPPLY ON M551
surface_treatmentENAMEL SEMIGLOSS
securing_device_typeSPECIAL
peripheral_shape_styleRECTANGLE, FOUR HOLES
cross-sectional_shape_styleFLAT, SQUARE OR RECTANGULAR RIB REINFORCED
NSN5340-01-202-7739
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 8449378 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: 0.130 INCHES NOMINAL IN
•
CORNER RADIUS: 0.060 INCHES NOMINAL IN
•
LENGTH: 5.540 INCHES MINIMUM AND 5.580 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541,CLASS 1A MIL SPEC 1ST TREATMENT RESPONSE AND TT-P-636 FED SPEC 2ND TREATMENT RESPONSE OR TT-P-664 FED SPEC 2ND TREATMENT RESPONSE AND TT-E-529 FED SPEC 3RD TREATMENT RESPONSE A
•
DISTANCE BETWEEN HOLES ALONG LENGTH: 5.110 INCHES MINIMUM AND 5.115 INCHES MAXIMUM IN
•
FLANGE THICKNESS: 0.125 INCHES NOMINAL IN
•
DISTANCE BETWEEN HOLES ALONG WIDTH: 4.330 INCHES MINIMUM AND 4.335 INCHES MAXIMUM IN
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
TECHNICAL CHARACTERISTICS
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG WIDTH0.130 INCHES NOMINAL IN
CORNER RADIUS0.060 INCHES NOMINAL IN
LENGTH5.540 INCHES MINIMUM AND 5.580 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541,CLASS 1A MIL SPEC 1ST TREATMENT RESPONSE AND TT-P-636 FED SPEC 2ND TREATMENT RESPONSE OR TT-P-664 FED SPEC 2ND TREATMENT RESPONSE AND TT-E-529 FED SPEC 3RD TREATMENT RESPONSE A
DISTANCE BETWEEN HOLES ALONG LENGTH5.110 INCHES MINIMUM AND 5.115 INCHES MAXIMUM IN
FLANGE THICKNESS0.125 INCHES NOMINAL IN
DISTANCE BETWEEN HOLES ALONG WIDTH4.330 INCHES MINIMUM AND 4.335 INCHES MAXIMUM IN
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-C-11866,COMP 2 MIL SPEC SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLEFLAT, SQUARE OR RECTANGULAR RIB REINFORCED
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: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8449378?
8449378 is a COVER,ACCESS.
What is the NSN for 8449378?
8449378 is cataloged in the U.S. Government catalog under NSN 5340-01-202-7739. This indicates validated use in U.S. government and defense supply chains.
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