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28334 — COVER,ELECTRONIC COMMUNICATION E

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

28334: COVER,ELECTRONIC COMMUNICATION E.

COVER,ELECTRONIC COMMUNICATION E. Key specifications include length: 0.735 INCHES MINIMUM AND 0.740 INCHES MAXIMUM IN, diameter: 0.250 INCHES NOMINAL IN, material: ALUMINUM ALLOY, head_style: HEXAGON, head_height: 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN, thread_class: 2A A. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-678-1111, 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
MRO→ MRO_GENERAL→ 28334
NSN: 5331-00-678-1111
NIINs: 006781111, 007215665, 011359197, 011409508, 014245177
FSC: 5331 — O-ring
CAGE: 16004 — DAVEY COMPRESSOR CO DIV OF KECO INDUSTRIES INC (USA)
SPECIFICATIONS
length0.735 INCHES MINIMUM AND 0.740 INCHES MAXIMUM IN
diameter0.250 INCHES NOMINAL IN
materialALUMINUM ALLOY
head_styleHEXAGON
head_height0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
thread_class2A A
thread_length1.125 INCHES MAXIMUM IN
fastener_length1.125 INCHES NOMINAL IN
style_designatorINTERNALLY THREADED FULL LENGTH
thread_directionRIGHT-HAND
surface_treatmentANODIZE OVERALL
width_between_flats0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
NSN5331-00-678-1111
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 28334 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
•
CROSS-SECTIONAL HEIGHT: 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 11.490 INCHES MINIMUM AND 11.510 INCHES MAXIMUM IN
•
MATERIAL: RUBBER SYNTHETIC
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
CENTER HOLE DIAMETER11.490 INCHES MINIMUM AND 11.510 INCHES MAXIMUM IN
MATERIALRUBBER SYNTHETIC
SUBSTITUTES & CROSS-REFERENCES 1
AP28334Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 28334?
28334 is a COVER,ELECTRONIC COMMUNICATION E. It is classified as a MRO (MRO_GENERAL).
What parts can replace 28334?
There is 1 known substitute for 28334: AP28334. Substitute compatibility should be verified for your specific system.
What is the NSN for 28334?
28334 is cataloged in the U.S. Government catalog under NSN 5331-00-678-1111. 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.