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341579 — SHIELD,EXPANSION

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

341579: SHIELD,EXPANSION.

The SHIELD,EXPANSION is a the manufacturer industrial component. Key specifications include material: PLASTIC, head_style: FLAT KEYED, fastener_type: NAIL, overall_length: 0.594 INCHES NOMINAL IN, style_designator: PLUNGER, DOUBLE EXPANSION, thread_provision: UNTHREADED. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-030-9057, 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
341579
NSN: 5340-01-030-9057
FSC: 5340 — Hardware, Commercial
CAGE: 57712 — TELEMECHANICS INC (USA)
SPECIFICATIONS
materialPLASTIC
head_styleFLAT KEYED
fastener_typeNAIL
unit_quantity2
overall_length0.594 INCHES NOMINAL IN
style_designatorPLUNGER, DOUBLE EXPANSION
thread_provisionUNTHREADED
features_providedCLOSED END
hole_accommodation_diameter0.041 INCHES NOMINAL IN
insert_type_for_which_designedNAILED
NSN5340-01-030-9057
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 341579 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
•
THREAD PROVISION: UNTHREADED
•
HOLE ACCOMMODATION DIAMETER: 0.041 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLUNGER, DOUBLE EXPANSION
•
FASTENER TYPE: NAIL
•
FEATURES PROVIDED: CLOSED END
•
INSERT TYPE FOR WHICH DESIGNED: NAILED
•
HEAD STYLE: FLAT KEYED
TECHNICAL CHARACTERISTICS
THREAD PROVISIONUNTHREADED
HOLE ACCOMMODATION DIAMETER0.041 INCHES NOMINAL IN
STYLE DESIGNATORPLUNGER, DOUBLE EXPANSION
FASTENER TYPENAIL
OVERALL LENGTH0.594 INCHES NOMINAL IN
FEATURES PROVIDEDCLOSED END
INSERT TYPE FOR WHICH DESIGNEDNAILED
HEAD STYLEFLAT KEYED
MATERIALPLASTIC
UNIT QUANTITY2
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 341579?
341579 is a SHIELD,EXPANSION.
What is the NSN for 341579?
341579 is cataloged in the U.S. Government catalog under NSN 5340-01-030-9057. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.