PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 271401
271401 ✓ 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 PLUG,VENT is a the manufacturer industrial component. Key specifications include length: 0.636 INCHES NOMINAL IN, material: ALUMINUM ALLOY, thread_class: 2A A, thread_length: 0.280 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN, inside_diameter: 0.175 INCHES NOMINAL IN, vent_hole_shape: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-571-3554, 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
271401
NSN: 5340-00-571-3554
FSC: 5340
CAGE: 55820 — RTX CORPORATION DIV PRATT & WHITNEY (USA)
SPECIFICATIONS
length0.636 INCHES NOMINAL IN
materialALUMINUM ALLOY
thread_class2A A
thread_length0.280 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
inside_diameter0.175 INCHES NOMINAL IN
vent_hole_shapeROUND
outside_diameter0.438 INCHES NOMINAL IN
special_featuresHEXAGON WRENCHING FEATURE 0.688 IN. ACROSS FLATS,0.075 IN. HOLE THRU ONE SIDE,WITH THREE LOCKWIRE HOLES IN
surface_treatmentANODIZE
vent_hole_diameter0.060 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
vent_hole_quantity1
end_connection_typeTHREADED
NSN5340-00-571-3554
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 271401 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 QUANTITY: 1
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 0.438-20 UNF
•
UNTHREADED END DIAMETER: 0.365 INCHES NOMINAL IN
•
MATERIAL: ALUMINUM ALLOY
•
VENT HOLE DIAMETER: 0.060 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
•
INSIDE DIAMETER: 0.175 INCHES NOMINAL IN
•
SURFACE TREATMENT: ANODIZE
•
LENGTH: 0.636 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
VENT HOLE QUANTITY1
THREAD SIZE AND SERIES/TYPE DESIGNATOR0.438-20 UNF
UNTHREADED END DIAMETER0.365 INCHES NOMINAL IN
MATERIALALUMINUM ALLOY
VENT HOLE DIAMETER0.060 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
INSIDE DIAMETER0.175 INCHES NOMINAL IN
SURFACE TREATMENTANODIZE
LENGTH0.636 INCHES NOMINAL IN
THREAD LENGTH0.280 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.438 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
27140Upgraded Successor
successor cross-reference
successor
4004-900241Upgraded Successor
successor cross-reference
successor
24552-084Interchangeable
interchangeable cross-reference
interchangeable
RCR20C332GRInterchangeable
interchangeable cross-reference
interchangeable
RC20GH332KInterchangeable
interchangeable cross-reference
interchangeable
VI429Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy 271401?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 271401?
271401 is a PLUG,VENT.
What parts can replace 271401?
There are 14 known substitutes for 271401: 27140, 4004-900241, 24552-084 and 11 more. Substitute compatibility should be verified for your specific system.
Is 271401 still available?
271401 is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 271401

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026