NSN 8475-01-184-8544 — this item is cataloged by the U.S. Government under National Stock Number 8475-01-184-8544. Manufacturer of record part number: A1817.
Also searched as8475-01-184-8544 ·
8475011848544 ·
NIIN 011848544 ·
01-184-8544 ·
FSC 8475 Specialized Flight Clothing and Accessories · CAGE 72724 · A1817
General Characteristics Item Description: FOAM INSERT FOR ACCOUSTICAL EARPHONE
1 manufacturer part number on file
Manufacturer of record: Gentex Corp
Identification
NSN: 8475-01-184-8544
NIIN: 011848544
FSC: 8475 — Specialized Flight Clothing and Accessories
FSG: 84 — Clothing, Individual Equipment, and Insignia
Primary part number: A1817
Manufacturer: Gentex Corp
General Description
The Insert,earphone, cataloged under National Stock Number 8475-01-184-8544, is classified within Federal Supply Class 8475 (Specialized Flight Clothing and Accessories) of the Clothing, Individual Equipment, and Insignia group. The manufacturer of record is Gentex Corp. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
8475-01-184-8544
Primary Part Number
A1817
Item Name
Insert,earphone
FSC / FSG
8475 / 84 — Specialized Flight Clothing and Accessories
Manufacturer
Gentex Corp
Status
ACTIVE
General Characteristics Item Description
FOAM INSERT FOR ACCOUSTICAL EARPHONE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5999-01-199-2853639AS3936POSSIBLE MATCH
CONTACT,ELECTRICAL
Possible match (shared part number)Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
NSN 8475-01-184-8544 is a Insert,earphone, manufactured by Gentex Corp, classified under FSC 8475, Specialized Flight Clothing and Accessories. Status: active.
What part numbers are listed for NSN 8475-01-184-8544?
NSN 8475-01-184-8544 has 1 manufacturer part number on file: A1817 (Gentex Corp).
What NSN replaces 8475-01-184-8544?
6 possible matches (shared part number, not a government interchangeability claim): 5999-01-199-2853, 8455-01-495-6912, 8455-01-541-3213. Verify interchangeability with system specifications before substitution.
What are the specifications of A1817?
Key specifications for A1817: General Characteristics Item Description: FOAM INSERT FOR ACCOUSTICAL EARPHONE; End Item Identification: PART OF MX-8376/AR EARCUP FOR A GENTEX HGH-26/P FLIGHT HELMET; T.O.14P3-4-112. 1 specification is documented in the U.S. Government catalog.
Is NSN 8475-01-184-8544 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.