The Mask,oxygen, cataloged under National Stock Number 1660-00-810-2156, 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 5 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: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 1660-00-810-2156 |
| Primary Part Number | 4PSIZESMALL |
| Item Name | Mask,oxygen |
| FSC / FSG | 1660 / 16 — No Item Name Available |
| Manufacturer | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| Status | CANCELLED |
| Mask Size Designation | SMALL |
| Microphone Pocket | INCLUDED |
| Oxygen System Type | PRESSURE DEMAND |
| Intake Tube Corrugated Feature | INCLUDED |
| Intake Tube Length | 17.500 INCHES NOMINAL IN |
| Helmet Fastener | INCLUDED |
| FSC Application Data | OXYGEN SYSTEM INSTL,AIRCRAFT |
| Material | FABRIC, NYLON LOCATION NOT OTHERWISE SPECIFIED |
| Material | RUBBER FACEPIECE |
| Nondefinitive Spec/std Data | MBU4/P TYPE |
| Microphone | NOT INCLUDED |
| Design Type | NOSE AND MOUTH |
| Harness | INCLUDED |
| Headband | NOT PROVIDED |
| Accessory Components and Quantity | CLINCHERS 3,HOOKS 2,INSERTS,ANTIFREEZE 2,SCREWS,ROUND HEAD 6,VALVE SEAT AND FLAP 2 |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 4PSIZESMALL | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| MBU4PSMALL | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| MILM7585 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| MBU4P | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| MILM25990 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
NSN 1660-00-810-2156 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: cancelled.
NSN 1660-00-810-2156 has 5 cross-referenced part numbers: 4PSIZESMALL (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MBU4PSMALL (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILM7585 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MBU4P (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILM25990 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).
There are 3 known substitutes for 1660-00-810-2156: 1660-00-807-9602, 1660-00-810-2155, 1660-00-811-5259. Verify interchangeability with system specifications before substitution.
Key specifications for 4PSIZESMALL: Mask Size Designation: SMALL; Microphone Pocket: INCLUDED; Oxygen System Type: PRESSURE DEMAND; Intake Tube Corrugated Feature: INCLUDED. 15 total characteristics are documented in the Federal Logistics Information System.
NSN 1660-00-810-2156 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.