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Technical Data Sheet
PartsTable / COMPONENT / A-A-1923
A-A-1923 ✓ 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 SHIELD,EXPANSION is a the manufacturer industrial component. Key specifications include material: STEEL, fastener_type: NUT, overall_length: 3.000 INCHES NOMINAL IN, thread_provision: THREADED, surface_treatment: ZINC, safe_operating_load_rating: 375.0 POUNDS NOMINAL LBS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-281-1458, 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
A-A-1923
NSN: 5340-00-281-1458
FSC: 5340
CAGE: 58536 — FEDERAL COMMERCIAL ITEM DESCRIPTION PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialSTEEL
fastener_typeNUT
unit_quantity1
overall_length3.000 INCHES NOMINAL IN
thread_provisionTHREADED
surface_treatmentZINC
safe_operating_load_rating375.0 POUNDS NOMINAL LBS
hole_accommodation_diameter0.250 INCHES NOMINAL IN
insert_type_for_which_designedNUT
NSN5340-00-281-1458
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A-A-1923 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
•
INSERT TYPE FOR WHICH DESIGNED: MACHINE BOLT
•
FEATURES PROVIDED: INSTALLATION SETTING TOOL
•
THREAD PROVISION: THREADED
•
FASTENER TYPE: BOLT
•
UNIT QUANTITY: 2
•
NOMINAL LENGTH: 5.000 INCHES IN
•
INSERT SIZE: 1/2 IN.-13 THD IN
TECHNICAL CHARACTERISTICS (FLIS)
INSERT TYPE FOR WHICH DESIGNEDMACHINE BOLT
FEATURES PROVIDEDINSTALLATION SETTING TOOL
THREAD PROVISIONTHREADED
FASTENER TYPEBOLT
UNIT QUANTITY2
OVERALL LENGTH2.250 INCHES NOMINAL IN
NOMINAL LENGTH5.000 INCHES IN
INSERT SIZE1/2 IN.-13 THD IN
HOLE ACCOMMODATION DIAMETER0.875 INCHES NOMINAL IN
STYLE DESIGNATORDOUBLE EXPANSION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
FFS325Upgraded Successor
successor cross-reference
successor
PT6212DIAM0NDNYUpgraded Successor
successor cross-reference
successor
PT6312DIAM0NDNYUpgraded Successor
successor cross-reference
successor
FFS325GP4TYPE1Upgraded Successor
successor cross-reference
successor
PT6416DIAM0NDNYUpgraded Successor
successor cross-reference
successor
AA1923-304Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A-A-1923?
A-A-1923 is a SHIELD,EXPANSION.
What parts can replace A-A-1923?
There are 6 known substitutes for A-A-1923: FFS325, PT6212DIAM0NDNY, PT6312DIAM0NDNY and 3 more. Substitute compatibility should be verified for your specific system.
Is A-A-1923 still available?
A-A-1923 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