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Technical Data Sheet
PartsTable / COMPONENT / NAS815-3A
NAS815-3A ✓ 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

PLUG,PROTECTIVE,DUST AND MOISTUR. Key specifications include material: PLASTIC, drive_type: RAISED RIB, design_type: THREADED, thread_class: 2A A, overall_diameter: 0.500 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN, features_provided: SHOULDER. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-881-2676, 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
NAS815-3A
NSN: 5340-00-881-2676
FSC: 5340
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialPLASTIC
drive_typeRAISED RIB
design_typeTHREADED
thread_class2A A
overall_diameter0.500 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN
features_providedSHOULDER
material_document_and_classificationL-P-390, TYPE 1, CLASS L, GRADE 1 OR GRADE 2 FED SPEC SINGLE MATERIAL RESPONSE
thread_size_and_series/type_designator3/8-24 UNF
NSN5340-00-881-2676
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: NAS815-3A 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 SIZE AND SERIES/TYPE DESIGNATOR: 3/8-24 UNF
•
DRIVE TYPE: RAISED RIB
•
DESIGN TYPE: THREADED
•
THREAD CLASS: 3A A
•
OVERALL DIAMETER: 0.500 INCHES NOMINAL IN
•
MATERIAL: PLASTIC
•
FEATURES PROVIDED: BEVELED SEAT
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SIZE AND SERIES/TYPE DESIGNATOR3/8-24 UNF
DRIVE TYPERAISED RIB
DESIGN TYPETHREADED
THREAD CLASS3A A
OVERALL DIAMETER0.500 INCHES NOMINAL IN
MATERIALPLASTIC
FEATURES PROVIDEDBEVELED SEAT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
M5501/1-3FInterchangeable
interchangeable cross-reference
interchangeable
NAS847-3Interchangeable
interchangeable cross-reference
interchangeable
MIL-C-5501/1Interchangeable
interchangeable cross-reference
interchangeable
10117488Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NAS815-3A?
NAS815-3A is a PLUG,PROTECTIVE,DUST AND MOISTUR.
What parts can replace NAS815-3A?
There are 4 known substitutes for NAS815-3A: M5501/1-3F, NAS847-3, MIL-C-5501/1 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NAS815-3A?
NAS815-3A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-881-2676. 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