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125B590H01 — PLUG,VENT

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

125B590H01: PLUG,VENT.

The PLUG,VENT is a the manufacturer industrial component. Key specifications include length: 0.320 INCHES NOMINAL IN, material: ALUMINUM ALLOY 7075, vent_hole_shape: ROUND, outside_diameter: 0.188 INCHES NOMINAL IN, surface_treatment: CHROMATE, vent_hole_diameter: 0.123 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-227-7962, 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
125B590H01
NSN: 5340-01-227-7962
FSC: 5340 — Hardware, Commercial
CAGE: 48306 — NORTHROP GRUMMAN SUPPORT SERVICES CORP (USA)
SPECIFICATIONS
length0.320 INCHES NOMINAL IN
materialALUMINUM ALLOY 7075
vent_hole_shapeROUND
outside_diameter0.188 INCHES NOMINAL IN
surface_treatmentCHROMATE
vent_hole_diameter0.123 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN
vent_hole_quantity1
end_connection_typeUNTHREADED
material_document_and_classificationQQ-A-225/9, T6 FED SPEC SINGLE MATERIAL RESPONSE
surface_treatment_document_and_classificationMIL-C-5541, CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE A
NSN5340-01-227-7962
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 125B590H01 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
•
VENT HOLE DIAMETER: 0.123 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN
•
LENGTH: 0.320 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541, CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE A
•
VENT HOLE SHAPE: ROUND
•
END CONNECTION TYPE: UNTHREADED
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/9, T6 FED SPEC SINGLE MATERIAL RESPONSE
•
OUTSIDE DIAMETER: 0.188 INCHES NOMINAL IN
•
SURFACE TREATMENT: CHROMATE
TECHNICAL CHARACTERISTICS
VENT HOLE DIAMETER0.123 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN
LENGTH0.320 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541, CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE A
VENT HOLE SHAPEROUND
END CONNECTION TYPEUNTHREADED
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/9, T6 FED SPEC SINGLE MATERIAL RESPONSE
OUTSIDE DIAMETER0.188 INCHES NOMINAL IN
SURFACE TREATMENTCHROMATE
MATERIALALUMINUM ALLOY 7075
VENT HOLE QUANTITY1
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 125B590H01?
125B590H01 is a PLUG,VENT.
What is the NSN for 125B590H01?
125B590H01 is cataloged in the U.S. Government catalog under NSN 5340-01-227-7962. 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.