PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILM7585Mask,oxygen

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 1660-00-810-2155 · FSC 1660 · No Item Name Available
Verified by PartsTable
NSN 1660-00-810-2155 — this item is cataloged by the U.S. Government under National Stock Number 1660-00-810-2155. Primary manufacturer part number: MILM7585.
Features
  • Mask,oxygen — FSC 1660
  • Headband: NOT PROVIDED
  • Intake Tube Corrugated Feature: NOT INCLUDED
  • Microphone: NOT INCLUDED
  • FSC Application Data: ACFT OXYGEN SYSTEM
  • Intake Tube Length: 17.500 INCHES NOMINAL IN
  • Nondefinitive Spec/std Data: MBU4/P TYPE
  • Microphone Pocket: INCLUDED
Applications
  • Applications requiring Plastic Polyamide Nylon Location Not Otherwise Specified construction
General Description

The Mask,oxygen, cataloged under National Stock Number 1660-00-810-2155, is classified within Federal Supply Class 1660 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1660-00-810-2155
Primary Part NumberMILM7585
Item NameMask,oxygen
FSC / FSG1660 / 16 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
HeadbandNOT PROVIDED
Intake Tube Corrugated FeatureNOT INCLUDED
MicrophoneNOT INCLUDED
FSC Application DataACFT OXYGEN SYSTEM
Intake Tube Length17.500 INCHES NOMINAL IN
Nondefinitive Spec/std DataMBU4/P TYPE
Microphone PocketINCLUDED
Mask Size DesignationX-SMALL
Helmet FastenerINCLUDED
MaterialPLASTIC POLYAMIDE NYLON LOCATION NOT OTHERWISE SPECIFIED
Oxygen System TypePRESSURE DEMAND
MaterialRUBBER FACEPIECE
Design TypeNOSE AND MOUTH
HarnessINCLUDED
Accessory Components and QuantityCLINCHERS 3,HOOKS 2,INSERTS,ANTIFREEZE 2,SCREWS,ROUND HEAD 6,VALVE SEAT AND FLAP 2
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
1660-00-807-9602 INTERCHANGEABLE
Mask,oxygen
1660-00-810-2156 INTERCHANGEABLE
Mask,oxygen
1660-00-811-5259 INTERCHANGEABLE
Mask,oxygen
Cross-Reference Index
Part NumberManufacturer
MILM7585 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MBU4PEXTRASMALL Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILM7585DTYPEMBU4P Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILM25990TYPEMBU4P Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
1660-00-807-9602INTERCHANGEABLE
MASK,OXYGEN
1660-00-810-2156INTERCHANGEABLE
MASK,OXYGEN
1660-00-811-5259INTERCHANGEABLE
MASK,OXYGEN

Frequently Asked Questions

What is NSN 1660-00-810-2155?

NSN 1660-00-810-2155 is a Mask,oxygen, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 1660 (No Item Name Available). Status: active.

What are the part numbers for NSN 1660-00-810-2155?

NSN 1660-00-810-2155 has 4 cross-referenced part numbers: MILM7585 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MBU4PEXTRASMALL (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILM7585DTYPEMBU4P (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILM25990TYPEMBU4P (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 1660-00-810-2155?

There are 3 known substitutes for 1660-00-810-2155: 1660-00-807-9602, 1660-00-810-2156, 1660-00-811-5259. Verify interchangeability with system specifications before substitution.

What are the specifications of MILM7585?

Key specifications for MILM7585: Headband: NOT PROVIDED; Intake Tube Corrugated Feature: NOT INCLUDED; Microphone: NOT INCLUDED; FSC Application Data: ACFT OXYGEN SYSTEM. 15 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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