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4-10339-28 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4-10339-28: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include material: MAGNESIUM ALLOY AZ31B, hole_diameter: 0.194 INCHES NOMINAL IN, securing_device_type: TURNLOCK FASTENER, peripheral_shape_style: RECTANGLE, MULTI HOLES, hole_quantity_along_length: 10, mounting_opening_shape_style: UNTHREADED HOLE. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-910-9066, 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
4-10339-28
NSN: 5340-00-910-9066
FSC: 5340 — Hardware, Commercial
CAGE: 79U29 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialMAGNESIUM ALLOY AZ31B
hole_diameter0.194 INCHES NOMINAL IN
securing_device_typeTURNLOCK FASTENER
peripheral_shape_styleRECTANGLE, MULTI HOLES
hole_quantity_along_width8
hole_quantity_along_length10
mounting_opening_shape_styleUNTHREADED HOLE
NSN5340-00-910-9066
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4-10339-28 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
•
HOLE QUANTITY ALONG LENGTH: 10
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
SECURING DEVICE TYPE: TURNLOCK FASTENER
•
HOLE QUANTITY ALONG WIDTH: 8
•
PERIPHERAL SHAPE STYLE: RECTANGLE, MULTI HOLES
•
MATERIAL: MAGNESIUM ALLOY AZ31B
•
HOLE DIAMETER: 0.194 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
HOLE QUANTITY ALONG LENGTH10
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
SECURING DEVICE TYPETURNLOCK FASTENER
HOLE QUANTITY ALONG WIDTH8
PERIPHERAL SHAPE STYLERECTANGLE, MULTI HOLES
MATERIALMAGNESIUM ALLOY AZ31B
HOLE DIAMETER0.194 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)Demilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is 4-10339-28?
4-10339-28 is a COVER,ACCESS.
What is the NSN for 4-10339-28?
4-10339-28 is cataloged in the U.S. Government catalog under NSN 5340-00-910-9066. 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.