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128HM10394-1 — PLUG,VENT

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

128HM10394-1: PLUG,VENT.

The PLUG,VENT is a the manufacturer industrial component. Key specifications include length: 0.719 INCHES NOMINAL IN, material: ALUMINUM ALLOY, thread_class: 3A A, thread_length: 0.349 INCHES NOMINAL IN, inside_diameter: 0.248 INCHES NOMINAL IN, vent_hole_shape: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-226-2528, 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
128HM10394-1
NSN: 5340-00-226-2528
FSC: 5340 — Hardware, Commercial
CAGE: 79RG9 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
length0.719 INCHES NOMINAL IN
materialALUMINUM ALLOY
thread_class3A A
thread_length0.349 INCHES NOMINAL IN
inside_diameter0.248 INCHES NOMINAL IN
vent_hole_shapeROUND
outside_diameter0.813 INCHES NOMINAL IN
special_featuresSIX LOCKWIRE HOLES 0.070 IN. DIA IN
vent_hole_diameter0.063 INCHES NOMINAL IN
vent_hole_quantity1
end_connection_typeTHREADED
refinement_device_typeFILTER DISK
NSN5340-00-226-2528
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 128HM10394-1 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
•
REFINEMENT MEDIUM TYPE: FILTERING
•
VENT HOLE DIAMETER: 0.063 INCHES NOMINAL IN
•
LENGTH: 0.719 INCHES NOMINAL IN
•
VENT HOLE SHAPE: ROUND
•
THREAD LENGTH: 0.349 INCHES NOMINAL IN
•
END CONNECTION TYPE: THREADED
•
OUTSIDE DIAMETER: 0.813 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.248 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
REFINEMENT MEDIUM TYPEFILTERING
VENT HOLE DIAMETER0.063 INCHES NOMINAL IN
LENGTH0.719 INCHES NOMINAL IN
VENT HOLE SHAPEROUND
THREAD LENGTH0.349 INCHES NOMINAL IN
END CONNECTION TYPETHREADED
OUTSIDE DIAMETER0.813 INCHES NOMINAL IN
INSIDE DIAMETER0.248 INCHES NOMINAL IN
SPECIAL FEATURESSIX LOCKWIRE HOLES 0.070 IN. DIA IN
THREAD CLASS3A A
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
128HM10394Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 128HM10394-1?
128HM10394-1 is a PLUG,VENT.
What parts can replace 128HM10394-1?
There is 1 known substitute for 128HM10394-1: 128HM10394. Substitute compatibility should be verified for your specific system.
What is the NSN for 128HM10394-1?
128HM10394-1 is cataloged in the U.S. Government catalog under NSN 5340-00-226-2528. 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.