PartsTable
Technical Data Sheet
D7728-3-5 ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 3.000 INCHES NOMINAL IN, length: 7.000 INCHES NOMINAL IN, material: STEEL, corner_radius: 0.375 INCHES NOMINAL IN, hole_diameter: 0.406 INCHES NOMINAL IN, body_thickness: 0.312 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-740-9088, 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
D7728-3-5
NSN: 5340-00-740-9088
FSC: 5340
CAGE: 81336 — CHIEF OF ENGINEERS DEPT OF ARMY (USA)
SPECIFICATIONS
width3.000 INCHES NOMINAL IN
length7.000 INCHES NOMINAL IN
materialSTEEL
corner_radius0.375 INCHES NOMINAL IN
hole_diameter0.406 INCHES NOMINAL IN
body_thickness0.312 INCHES NOMINAL IN
special_featuresTHREE HOLES 2.500 IN. APART ON OPPOSITE SIDE ALONG LENGTH IN
securing_device_typeTHREADED FASTENER
peripheral_shape_styleRECTANGLE, MULTI HOLES
hole_quantity_along_width2
hole_quantity_along_length5
cross-sectional_shape_styleFLAT
NSN5340-00-740-9088
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: D7728-3-5 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
WIDTH: 3.000 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLE: FLAT
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG WIDTH: 0.438 INCHES NOMINAL IN
CORNER RADIUS: 0.375 INCHES NOMINAL IN
SECURING DEVICE TYPE: THREADED FASTENER
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
HOLE DIAMETER: 0.406 INCHES NOMINAL IN
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH3.000 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEFLAT
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG WIDTH0.438 INCHES NOMINAL IN
CORNER RADIUS0.375 INCHES NOMINAL IN
SECURING DEVICE TYPETHREADED FASTENER
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
HOLE DIAMETER0.406 INCHES NOMINAL IN
MATERIALSTEEL
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG LENGTH0.375 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLERECTANGLE, MULTI HOLES
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
306-0293-000Interchangeable
interchangeable cross-reference
interchangeable
290Interchangeable
interchangeable cross-reference
interchangeable
125696Interchangeable
interchangeable cross-reference
interchangeable
B94.9Interchangeable
interchangeable cross-reference
interchangeable
13153Interchangeable
interchangeable cross-reference
interchangeable
42992BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D7728-3-5?
D7728-3-5 is a COVER,ACCESS.
What parts can replace D7728-3-5?
There are 14 known substitutes for D7728-3-5: 306-0293-000, 290, 125696 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D7728-3-5?
D7728-3-5 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-740-9088. This indicates validated use in U.S. government and defense supply chains.
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