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Technical Data Sheet
PartsTable / COMPONENT / AA1923-304
AA1923-304 ✓ 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 head_style: SQUARE, insert_size: 1/2 IN.-13 THD IN, fastener_type: BOLT, nominal_length: 5.000 INCHES IN, overall_length: 2.250 INCHES NOMINAL IN, style_designator: DOUBLE EXPANSION. 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
AA1923-304
NSN: 5340-00-281-1458
FSC: 5340
CAGE: 58536 — FEDERAL COMMERCIAL ITEM DESCRIPTION PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
head_styleSQUARE
insert_size1/2 IN.-13 THD IN
fastener_typeBOLT
unit_quantity2
nominal_length5.000 INCHES IN
overall_length2.250 INCHES NOMINAL IN
style_designatorDOUBLE EXPANSION
thread_provisionTHREADED
features_providedINSTALLATION SETTING TOOL
safe_operating_load_rating550.0 POUNDS NOMINAL LBS
hole_accommodation_diameter0.875 INCHES NOMINAL IN
nondefinitive_spec/std_data2 GROUP AND 2 TYPE AND 2 CLASS AND 2 STYLE
NSN5340-00-281-1458
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AA1923-304 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
A-A-1923Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AA1923-304?
AA1923-304 is a SHIELD,EXPANSION.
What parts can replace AA1923-304?
There are 6 known substitutes for AA1923-304: FFS325, PT6212DIAM0NDNY, PT6312DIAM0NDNY and 3 more. Substitute compatibility should be verified for your specific system.
Is AA1923-304 still available?
AA1923-304 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