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PartsTable / COMPONENT / NAS814-8B
NAS814-8B ✓ 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

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: PLASTIC, design_type: THREADED, thread_class: 2B, overall_diameter: 0.500 INCHES NOMINAL IN, round_cap_outside_surface_condition: RIBBED, thread_size_and_series/type_designator: 3/4-16 UNF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-030-4467, 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
NAS814-8B
NSN: 5340-01-030-4467
FSC: 5340
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialPLASTIC
design_typeTHREADED
thread_class2B
overall_diameter0.500 INCHES NOMINAL IN
round_cap_outside_surface_conditionRIBBED
thread_size_and_series/type_designator3/4-16 UNF
NSN5340-01-030-4467
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: NAS814-8B 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
•
OVERALL DIAMETER: 0.500 INCHES NOMINAL IN
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 3/4-16 UNF
•
DESIGN TYPE: THREADED
•
MATERIAL: PLASTIC
•
THREAD CLASS: 2B
•
ROUND CAP OUTSIDE SURFACE CONDITION: RIBBED
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL DIAMETER0.500 INCHES NOMINAL IN
THREAD SIZE AND SERIES/TYPE DESIGNATOR3/4-16 UNF
DESIGN TYPETHREADED
MATERIALPLASTIC
THREAD CLASS2B
ROUND CAP OUTSIDE SURFACE CONDITIONRIBBED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
M5501/3-R10Upgraded Successor
successor cross-reference
successor
MILC5501Upgraded Successor
successor cross-reference
successor
S8625-7-8-14Upgraded Successor
successor cross-reference
successor
6-16Upgraded Successor
successor cross-reference
successor
5340PL1450718Upgraded Successor
successor cross-reference
successor
118170Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NAS814-8B?
NAS814-8B is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace NAS814-8B?
There are 22 known substitutes for NAS814-8B: M5501/3-R10, MILC5501, S8625-7-8-14 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NAS814-8B?
NAS814-8B is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-030-4467. 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