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4056708 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4056708: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 2.000 INCHES NOMINAL IN, length: 2.750 INCHES NOMINAL IN, corner_radius: 1.418 INCHES NOMINAL IN, hole_diameter: 0.184 INCHES NOMINAL IN, body_thickness: 0.047 INCHES NOMINAL IN, securing_device_type: THREADED FASTENER. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-268-3679, 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
4056708
NSN: 5340-00-268-3679
FSC: 5340 — Hardware, Commercial
CAGE: 0AHU0 — KALMAR AC INC (USA)
SPECIFICATIONS
width2.000 INCHES NOMINAL IN
length2.750 INCHES NOMINAL IN
corner_radius1.418 INCHES NOMINAL IN
hole_diameter0.184 INCHES NOMINAL IN
body_thickness0.047 INCHES NOMINAL IN
special_featuresEXTENDED TAB ON EACH END THAT IS BENT DOWN AND IN,WITH HOLES THAT CORRESPOND WITH THOSE ON TOP OF PLATE,FOR THE PURPOSE OF LOCKING COVER IN PLACE
securing_device_typeTHREADED FASTENER
peripheral_shape_styleIRREGULAR, FLAT SIDES, RADII ENDS, TWO HOLES
cross-sectional_shape_styleFLAT
mounting_opening_shape_styleUNTHREADED HOLE
distance_between_holes_along_length2.393 INCHES NOMINAL IN
NSN5340-00-268-3679
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4056708 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
•
CORNER RADIUS: 1.418 INCHES NOMINAL IN
•
LENGTH: 2.750 INCHES NOMINAL IN
•
DISTANCE BETWEEN HOLES ALONG LENGTH: 2.393 INCHES NOMINAL IN
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
CROSS-SECTIONAL SHAPE STYLE: FLAT
•
SECURING DEVICE TYPE: THREADED FASTENER
•
PERIPHERAL SHAPE STYLE: IRREGULAR, FLAT SIDES, RADII ENDS, TWO HOLES
TECHNICAL CHARACTERISTICS
CORNER RADIUS1.418 INCHES NOMINAL IN
LENGTH2.750 INCHES NOMINAL IN
DISTANCE BETWEEN HOLES ALONG LENGTH2.393 INCHES NOMINAL IN
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
CROSS-SECTIONAL SHAPE STYLEFLAT
SECURING DEVICE TYPETHREADED FASTENER
SPECIAL FEATURESEXTENDED TAB ON EACH END THAT IS BENT DOWN AND IN,WITH HOLES THAT CORRESPOND WITH THOSE ON TOP OF PLATE,FOR THE PURPOSE OF LOCKING COVER IN PLACE
PERIPHERAL SHAPE STYLEIRREGULAR, FLAT SIDES, RADII ENDS, TWO HOLES
WIDTH2.000 INCHES NOMINAL IN
HOLE DIAMETER0.184 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 1
1960919Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4056708?
4056708 is a COVER,ACCESS.
What parts can replace 4056708?
There is 1 known substitute for 4056708: 1960919. Substitute compatibility should be verified for your specific system.
What is the NSN for 4056708?
4056708 is cataloged in the U.S. Government catalog under NSN 5340-00-268-3679. 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.