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G257287-1 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

G257287-1: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 2.810 INCHES NOMINAL IN, length: 10.440 INCHES NOMINAL IN, material: ALUMINUM ALLOY 6061, body_thickness: 0.040 INCHES NOMINAL IN, inside_diameter: 7.312 INCHES NOMINAL IN, flange_thickness: 0.031 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-209-9932, 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
G257287-1
NSN: 5340-01-209-9932
FSC: 5340 — Hardware, Commercial
CAGE: 3B150 — RAYTHEON COMPANY DBA RAYTHEON CO (USA)
SPECIFICATIONS
width2.810 INCHES NOMINAL IN
length10.440 INCHES NOMINAL IN
materialALUMINUM ALLOY 6061
body_thickness0.040 INCHES NOMINAL IN
inside_diameter7.312 INCHES NOMINAL IN
flange_thickness0.031 INCHES NOMINAL IN
inside_corner_radius3.750 INCHES NOMINAL IN
securing_device_typeTHREADED FASTENER
peripheral_shape_styleRECTANGLE, MULTI HOLES
end_item_identificationAN/ALQ-184 ECM POD
first_recess_inside_height0.263 INCHES NOMINAL IN
hole_quantity_along_length5
NSN5340-01-209-9932
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: G257287-1 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: 0.490 INCHES NOMINAL IN
•
LENGTH: 10.440 INCHES NOMINAL IN
•
DISTANCE BETWEEN HOLES ALONG LENGTH: 1.600 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.031 INCHES NOMINAL IN
•
INSIDE CORNER RADIUS: 3.750 INCHES NOMINAL IN
•
FIRST RECESS INSIDE HEIGHT: 0.263 INCHES NOMINAL IN
•
HOLE QUANTITY ALONG LENGTH: 5
•
CROSS-SECTIONAL SHAPE STYLE: CIRCULAR RECESS
TECHNICAL CHARACTERISTICS
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG WIDTH0.490 INCHES NOMINAL IN
LENGTH10.440 INCHES NOMINAL IN
DISTANCE BETWEEN HOLES ALONG LENGTH1.600 INCHES NOMINAL IN
FLANGE THICKNESS0.031 INCHES NOMINAL IN
INSIDE CORNER RADIUS3.750 INCHES NOMINAL IN
FIRST RECESS INSIDE HEIGHT0.263 INCHES NOMINAL IN
HOLE QUANTITY ALONG LENGTH5
CROSS-SECTIONAL SHAPE STYLECIRCULAR RECESS
SECURING DEVICE TYPETHREADED FASTENER
INSIDE DIAMETER7.312 INCHES NOMINAL 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 G257287-1?
G257287-1 is a COVER,ACCESS.
What is the NSN for G257287-1?
G257287-1 is cataloged in the U.S. Government catalog under NSN 5340-01-209-9932. This indicates validated use in U.S. government and defense supply chains.
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