PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

450-09AHardshell Assembly

Avox Systems Inc Dba Avox Systems Inc · NSN 1660-00-794-0868 · FSC 1660 · No Item Name Available
Verified by PartsTable
NSN 1660-00-794-0868 — this item is cataloged by the U.S. Government under National Stock Number 1660-00-794-0868. Primary manufacturer part number: 450-09A.
Features
  • Hardshell Assembly — FSC 1660
  • General Characteristics Item Description: REGULAR NARROW SIZE
  • 6 verified cross-references
  • Primary manufacturer: Avox Systems Inc Dba Avox Systems Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Hardshell Assembly, cataloged under National Stock Number 1660-00-794-0868, is classified within Federal Supply Class 1660 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Avox Systems Inc Dba Avox Systems Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1660-00-794-0868
Primary Part Number450-09A
Item NameHardshell Assembly
FSC / FSG1660 / 16 — No Item Name Available
ManufacturerAvox Systems Inc Dba Avox Systems Inc
StatusACTIVE
General Characteristics Item DescriptionREGULAR NARROW SIZE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
3455-00-194-051010070 INTERCHANGEABLE
Cutter,milling,plain
Niagara Cutter Inc
1660-00-794-0857 INTERCHANGEABLE
Facepiece,mask,oxygen
1660-00-794-0858 INTERCHANGEABLE
Facepiece,mask,oxygen
1660-00-810-3225 INTERCHANGEABLE
Mask,oxygen
5995-01-034-6172 INTERCHANGEABLE
Cable Assembly,radio Frequency
1660-01-095-8664450-401 INTERCHANGEABLE
Mask,oxygen
Avox Systems Inc Dba Avox Systems Inc
5330-01-126-515745009 INTERCHANGEABLE
Gasket
Leroi International Inc Dba Compair Leroi
3110-01-188-9345 INTERCHANGEABLE
Bearing,ball,annular
6525-01-485-992245009 INTERCHANGEABLE
Processor,dental X-Ray Film
Air Techniques, Inc.
2530-01-608-229145009 INTERCHANGEABLE
Axle,vehicular,nondriving
Tld America Corporation Div Tld America
Cross-Reference Index
Part NumberManufacturer
450-09A PRIMARY Avox Systems Inc Dba Avox Systems Inc (USA)
MIL-M-27274 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
7425180-21 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
7425180-21 San Antonio Air Logistics Center (USA)
450-09 Avox Systems Inc Dba Avox Systems Inc (USA)
G005-1030-01 Gentex Corp (USA)
Related Parts
3455-00-194-0510INTERCHANGEABLE
CUTTER,MILLING,PLAIN
10070
1660-00-794-0857INTERCHANGEABLE
FACEPIECE,MASK,OXYGEN
1660-00-794-0858INTERCHANGEABLE
FACEPIECE,MASK,OXYGEN
1660-00-810-3225INTERCHANGEABLE
MASK,OXYGEN
5995-01-034-6172INTERCHANGEABLE
CABLE ASSEMBLY,RADIO FREQUENCY
1660-01-095-8664INTERCHANGEABLE
MASK,OXYGEN
450-401
5330-01-126-5157INTERCHANGEABLE
GASKET
45009
3110-01-188-9345INTERCHANGEABLE
BEARING,BALL,ANNULAR
6525-01-485-9922INTERCHANGEABLE
PROCESSOR,DENTAL X-RAY FILM
45009
2530-01-608-2291INTERCHANGEABLE
AXLE,VEHICULAR,NONDRIVING
45009

Frequently Asked Questions

What is NSN 1660-00-794-0868?

NSN 1660-00-794-0868 is a Hardshell Assembly, manufactured by Avox Systems Inc Dba Avox Systems Inc, classified under FSC 1660 (No Item Name Available). Status: active.

What are the part numbers for NSN 1660-00-794-0868?

NSN 1660-00-794-0868 has 6 cross-referenced part numbers: 450-09A (Avox Systems Inc Dba Avox Systems Inc), MIL-M-27274 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 7425180-21 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 7425180-21 (San Antonio Air Logistics Center), 450-09 (Avox Systems Inc Dba Avox Systems Inc) and 1 more.

What NSN replaces 1660-00-794-0868?

There are 10 known substitutes for 1660-00-794-0868: 3455-00-194-0510, 1660-00-794-0857, 1660-00-794-0858 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 450-09A?

Key specifications for 450-09A: General Characteristics Item Description: REGULAR NARROW SIZE. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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