NSN 8475-01-156-6823 · NIIN 011566823 · Part number 651-19
Avox Systems Inc Dba Avox Systems Inc · FSC 8475 — Specialized Flight Clothing and Accessories · FSG 84 — Clothing, Individual Equipment, and Insignia · CAGE 53655
Government record, cited
NSN 8475-01-156-6823 — this item is cataloged by the U.S. Government under National Stock Number 8475-01-156-6823. Manufacturer of record part number: 651-19.
Also searched as8475-01-156-6823 ·
8475011566823 ·
NIIN 011566823 ·
01-156-6823 ·
FSC 8475 Specialized Flight Clothing and Accessories · CAGE 53655 · 651-19
Manufacturer of record: Avox Systems Inc Dba Avox Systems Inc
Identification
NSN: 8475-01-156-6823
NIIN: 011566823
FSC: 8475 — Specialized Flight Clothing and Accessories
FSG: 84 — Clothing, Individual Equipment, and Insignia
Primary part number: 651-19
Manufacturer: Avox Systems Inc Dba Avox Systems Inc
General Description
The Flapper,valve, cataloged under National Stock Number 8475-01-156-6823, 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 Avox Systems Inc Dba Avox Systems Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Catalog Facts
Item Name
Flapper,valve
FSC / FSG
8475 — Specialized Flight Clothing and Accessories (FSG 84)
Manufacturers
Avox Systems Inc Dba Avox Systems Inc (CAGE 53655)
Technical Specifications
Parameter
Value
NSN
8475-01-156-6823
Primary Part Number
651-19
Item Name
Flapper,valve
FSC / FSG
8475 / 84 — Specialized Flight Clothing and Accessories
Manufacturer
Avox Systems Inc Dba Avox Systems Inc
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
⇄Related Items2
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
2520-01-229-33799-364-100217POSSIBLE MATCH
YOKE,UNIVERSAL JOINT,VEHICULAR
Possible match (shared part number)Grove U.s. Llc Dba Grove Us Llc
2915-01-396-85375046T91P06POSSIBLE MATCH
SPRAY TIP,NOZZLE,FUEL INJECTOR
Possible match (shared part number)General Electric Company Dba Ge Aerospace
NSN 8475-01-156-6823 is a Flapper,valve, manufactured by Avox Systems Inc Dba Avox Systems Inc, classified under FSC 8475, Specialized Flight Clothing and Accessories. Status: active.
What part numbers are listed for NSN 8475-01-156-6823?
NSN 8475-01-156-6823 has 1 manufacturer part number on file: 651-19 (Avox Systems Inc Dba Avox Systems Inc).
What NSN replaces 8475-01-156-6823?
2 possible matches (shared part number, not a government interchangeability claim): 2520-01-229-3379, 2915-01-396-8537. Verify interchangeability with system specifications before substitution.
Is NSN 8475-01-156-6823 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.