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Technical Data Sheet
PartsTable / COMPONENT / 14040H-A.250-22
14040H-A.250-22 ✓ 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 14040H-A.250-22 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-506-6366, 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
14040H-A.250-22
NSN: 5340-01-506-6366
FSC: 5340
CAGE: 51506 — ACCURATE SCREW MACHINE CORP DIV ACCURATE SCREW MACHINE CORPORATION (USA)
SPECIFICATIONS
Part Number14040H-A.250-22
NSN5340-01-506-6366
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 14040H-A.250-22 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
•
LENGTH: 0.250 INCHES NOMINAL IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD)
•
RIGHT PROJECTION DIAMETER: 0.138 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE: HEXAGON
•
THREAD QUANTITY PER INCH: 32 LEFT INTERNAL (INCLUDES THRU THREAD)
•
THREAD DIRECTION: RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
•
RIGHT PROJECTION LENGTH: 0.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
LENGTH0.250 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD)
RIGHT PROJECTION DIAMETER0.138 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPEHEXAGON
END ITEM IDENTIFICATIONMATCALS; W/S: RADAR AND IFF SYSTEMS
THREAD QUANTITY PER INCH32 LEFT INTERNAL (INCLUDES THRU THREAD)
THREAD DIRECTIONRIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
RIGHT PROJECTION LENGTH0.375 INCHES NOMINAL IN
THREAD CLASS2B LEFT INTERNAL (INCLUDES THRU THREAD)
STYLE DESIGNATORLEFT INTERNAL AND RIGHT EXTERNAL THREAD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
741150-K1Upgraded Successor
successor cross-reference
successor
8-7-17Upgraded Successor
successor cross-reference
successor
800524PC41Interchangeable
interchangeable cross-reference
interchangeable
B21033CInterchangeable
interchangeable cross-reference
interchangeable
MIL-W-16878/4Interchangeable
interchangeable cross-reference
interchangeable
MIL-S-16878/4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 14040H-A.250-22?
14040H-A.250-22 is a 14040H-A.250-22.
What parts can replace 14040H-A.250-22?
There are 17 known substitutes for 14040H-A.250-22: 741150-K1, 8-7-17, 800524PC41 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 14040H-A.250-22?
14040H-A.250-22 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-506-6366. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026