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PartsTable / COMPONENT / A593-51
A593-51 ✓ 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 PLUNGER,QUICK RELEASE is a the manufacturer industrial component. Key specifications include shape: ROUND, thread_length: 0.312 INCHES NOMINAL IN, overall_length: 0.335 INCHES NOMINAL IN, nominal_thread_size: 0.138 INCHES IN, thread_quantity_per_inch: 40, thread_series_designator: UNF. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-907-7799, 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
A593-51
NSN: 5340-00-907-7799
FSC: 5340
CAGE: 34228 — L3 TECHNOLOGIES, INC. DIV L3 KEO (USA)
SPECIFICATIONS
shapeROUND
thread_length0.312 INCHES NOMINAL IN
overall_length0.335 INCHES NOMINAL IN
nominal_thread_size0.138 INCHES IN
thread_quantity_per_inch40
thread_series_designatorUNF
NSN5340-00-907-7799
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A593-51 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
•
NOMINAL THREAD SIZE: 0.138 INCHES IN
•
THREAD LENGTH: 0.312 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 40
•
SHAPE: ROUND
•
THREAD SERIES DESIGNATOR: UNF
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.138 INCHES IN
THREAD LENGTH0.312 INCHES NOMINAL IN
THREAD QUANTITY PER INCH40
OVERALL LENGTH0.335 INCHES NOMINAL IN
SHAPEROUND
THREAD SERIES DESIGNATORUNF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
052948Upgraded Successor
successor cross-reference
successor
11103-1Upgraded Successor
successor cross-reference
successor
6530010746600Upgraded Successor
successor cross-reference
successor
11103Upgraded Successor
successor cross-reference
successor
R11103Interchangeable
interchangeable cross-reference
interchangeable
01114Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A593-51?
A593-51 is a PLUNGER,QUICK RELEASE.
What parts can replace A593-51?
There are 22 known substitutes for A593-51: 052948, 11103-1, 6530010746600 and 19 more. Substitute compatibility should be verified for your specific system.
Is A593-51 still available?
A593-51 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026