PartsTable TECHNICAL DATA SHEET
NSN 8475-00-994-4951Government record, cited

Pad, Strap, Flying, Helmet8475-00-994-4951

NSN 8475-00-994-4951 · NIIN 009944951 · Part number 561-145
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 8475-00-994-4951 — this item is cataloged by the U.S. Government under National Stock Number 8475-00-994-4951. Manufacturer of record part number: 561-145.
Also searched as  8475-00-994-4951 · 8475009944951 · NIIN 009944951 · 00-994-4951 · FSC 8475 Specialized Flight Clothing and Accessories · CAGE 53655 · 561-145 · TMC12-1716-1 · 59B3556
Nearby stock numbers  ·
Features
  • Pad,strap,flying,helmet — FSC 8475
  • 2 manufacturer part numbers on file
  • Manufacturer of record: Avox Systems Inc Dba Avox Systems Inc
Identification
  • NSN: 8475-00-994-4951
  • NIIN: 009944951
  • FSC: 8475 — Specialized Flight Clothing and Accessories
  • FSG: 84 — Clothing, Individual Equipment, and Insignia
  • Primary part number: 561-145
  • Manufacturer: Avox Systems Inc Dba Avox Systems Inc
General Description

The Pad,strap,flying,helmet, cataloged under National Stock Number 8475-00-994-4951, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN8475-00-994-4951
Primary Part Number561-145
Item NamePad,strap,flying,helmet
FSC / FSG8475 / 84 — Specialized Flight Clothing and Accessories
ManufacturerAvox Systems Inc Dba Avox Systems Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 1
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
7050-01-009-07143162665 POSSIBLE MATCH
CONVERTER,DIGITAL TO ANALOG
Possible match (shared part number)Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
Cross-Reference Index
Part NumberManufacturer
TMC12-1716-1 Astro-Technik Gmbh (DEU)
561-145 PRIMARY Avox Systems Inc Dba Avox Systems Inc (USA)
Reference documents
ReferenceMeaning
59B3556 5/9 Secondary reference
U.S. Government activity
Related Parts
7050-01-009-0714POSSIBLE MATCH
CONVERTER,DIGITAL TO ANALOG
3162665

Frequently Asked Questions

What is NSN 8475-00-994-4951?

NSN 8475-00-994-4951 is a Pad,strap,flying,helmet, 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 8475-00-994-4951?

NSN 8475-00-994-4951 has 2 manufacturer part numbers on file: TMC12-1716-1 (Astro-Technik Gmbh), 561-145 (Avox Systems Inc Dba Avox Systems Inc).

What NSN replaces 8475-00-994-4951?

1 possible match (shared part number, not a government interchangeability claim): 7050-01-009-0714. Verify interchangeability with system specifications before substitution.

What are the specifications of 561-145?

Key specifications for 561-145: Special Features: 4.625 IN. O/A LG,1.375 IN. O/A W,WHITE,APPL P/N 62B4304,STRAP,CHINAND NAPE STRAP IN; Part Name Assigned by Controlling Agency: PAD, STRAP, FLYING HELMET. 0 specifications are documented in the U.S. Government catalog.

Is NSN 8475-00-994-4951 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.
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