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NSN 8475-01-077-8904Government record, cited
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Liner Assembly, Helmet8475-01-077-8904

NSN 8475-01-077-8904 · NIIN 010778904 · Part number 954AS500-12
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier · FSC 8475 — Specialized Flight Clothing and Accessories · FSG 84 — Clothing, Individual Equipment, and Insignia · CAGE 30003
Government record, cited
NSN 8475-01-077-8904 — this item is cataloged by the U.S. Government under National Stock Number 8475-01-077-8904. Manufacturer of record part number: 954AS500-12.
Also searched as  8475-01-077-8904 · 8475010778904 · NIIN 010778904 · 01-077-8904 · FSC 8475 Specialized Flight Clothing and Accessories · CAGE 30003 · 954AS500-12 · PRK-40/P · MIL-H-85047 · 954AS500-2
Nearby stock numbers  ·
Features
  • Liner Assembly,helmet — FSC 8475
  • FSC Application Data: HELMET,ANTI-G
  • General Characteristics Item Description: LARGE SIZE; INCLUDES LARGE NAPE STRAP AND PAD SET FITTING
  • 2 manufacturer part numbers on file
  • Manufacturer of record: Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
Identification
  • NSN: 8475-01-077-8904
  • NIIN: 010778904
  • FSC: 8475 — Specialized Flight Clothing and Accessories
  • FSG: 84 — Clothing, Individual Equipment, and Insignia
  • Primary part number: 954AS500-12
  • Manufacturer: Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
General Description

The Liner Assembly,helmet, cataloged under National Stock Number 8475-01-077-8904, 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 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN8475-01-077-8904
Primary Part Number954AS500-12
Item NameLiner Assembly,helmet
FSC / FSG8475 / 84 — Specialized Flight Clothing and Accessories
ManufacturerNaval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
StatusACTIVE
FSC Application DataHELMET,ANTI-G
General Characteristics Item DescriptionLARGE SIZE; INCLUDES LARGE NAPE STRAP AND PAD SET FITTING
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL B — Remove Demilitarization Key Points
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeN
⇄ Related Items 8
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
8475-01-078-0272954AS400-6 POSSIBLE MATCH
VISOR,FLYER'S HELMET
Possible match (shared part number)Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
8475-01-078-7122954AS400-5 POSSIBLE MATCH
VISOR,FLYER'S HELMET
Possible match (shared part number)Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
8475-01-128-9715954AS300-1 POSSIBLE MATCH
SHELL ASSEMBLY,HELMET
Possible match (shared part number)Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
8475-01-137-1032954AS300-2 POSSIBLE MATCH
SHELL ASSEMBLY,HELMET
Possible match (shared part number)Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
8475-01-203-4915954AS400-15 POSSIBLE MATCH
VISOR,FLYER'S HELMET
Possible match (shared part number)Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
8475-01-204-5061954AS400-16 POSSIBLE MATCH
VISOR,FLYER'S HELMET
Possible match (shared part number)Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
8475-01-250-2699954AS300-21 POSSIBLE MATCH
SHELL ASSEMBLY,HELMET
Possible match (shared part number)Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
8475-01-253-7226954AS300-22 POSSIBLE MATCH
SHELL ASSEMBLY,HELMET
Possible match (shared part number)Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
Cross-Reference Index
Part NumberManufacturer
954AS500-2 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
954AS500-12 PRIMARY Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
Reference documents
ReferenceMeaning
PRK-40/P 4/1 Identification reference
U.S. Government activity
MIL-H-85047 4/1 Identification reference
U.S. Government activity
Related Parts
8475-01-078-0272POSSIBLE MATCH
VISOR,FLYER'S HELMET
954AS400-6
8475-01-078-7122POSSIBLE MATCH
VISOR,FLYER'S HELMET
954AS400-5
8475-01-128-9715POSSIBLE MATCH
SHELL ASSEMBLY,HELMET
954AS300-1
8475-01-137-1032POSSIBLE MATCH
SHELL ASSEMBLY,HELMET
954AS300-2
8475-01-203-4915POSSIBLE MATCH
VISOR,FLYER'S HELMET
954AS400-15
8475-01-204-5061POSSIBLE MATCH
VISOR,FLYER'S HELMET
954AS400-16
8475-01-250-2699POSSIBLE MATCH
SHELL ASSEMBLY,HELMET
954AS300-21
8475-01-253-7226POSSIBLE MATCH
SHELL ASSEMBLY,HELMET
954AS300-22

Frequently Asked Questions

What is NSN 8475-01-077-8904?

NSN 8475-01-077-8904 is a Liner Assembly,helmet, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 8475, Specialized Flight Clothing and Accessories. Status: active.

What part numbers are listed for NSN 8475-01-077-8904?

NSN 8475-01-077-8904 has 2 manufacturer part numbers on file: 954AS500-2 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 954AS500-12 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).

What NSN replaces 8475-01-077-8904?

8 possible matches (shared part number, not a government interchangeability claim): 8475-01-078-0272, 8475-01-078-7122, 8475-01-128-9715. Verify interchangeability with system specifications before substitution.

What are the specifications of 954AS500-12?

Key specifications for 954AS500-12: FSC Application Data: HELMET,ANTI-G; General Characteristics Item Description: LARGE SIZE; INCLUDES LARGE NAPE STRAP AND PAD SET FITTING. 2 specifications are documented in the U.S. Government catalog.

Is NSN 8475-01-077-8904 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.

What is the DEMIL code for NSN 8475-01-077-8904?

NSN 8475-01-077-8904 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.

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.

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✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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