PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MQ-1Tester,oxygen Mask

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6695-00-564-9500 · FSC 6695 · No Item Name Available
Verified by PartsTable
NSN 6695-00-564-9500 — this item is cataloged by the U.S. Government under National Stock Number 6695-00-564-9500. Primary manufacturer part number: MQ-1.
Features
  • Tester,oxygen Mask — FSC 6695
  • General Characteristics Item Description: TESTER CONSISTS OF CASE 1,OXYGEN EQUIPMENT WHICH INCLUDES FLOW INDICATOR 1,PRESSURE GAGE 1,OXYGEN REGULATOR 1,MASK HOSE 1,INLET FITTING T-FITTING 1;COMMUNICATIONS AND GOGGLE EQUIPMENT WHICH INCLUDES POWER UNIT 1,HEADSET-MICROPHONE-GOGGLE EQUIPMENT TEST CIRCUIT 1;CASE MADE OF FIBERGLASS,ALUMINUM OR FIBERBOARD MATERIAL;FINISH DURABLE BLACK PER NO 33538 OF FED-STD-595;PANEL IN CASE RECESSED;CASE DIMENSIONS 12.0 IN. DEPTH BY 17.0 IN. LONG BY 10.0 IN. HIGH,3.062 INCH OF HEIGHT ARE TOP OF CASE;POWER UNIT CAPABLE OF CONVERTING 115 VAC,60 HZ;OUTPUT 28VDC,200MA;6 FOOT HEAVY DUTY ELECTRICAL CORD VDC
  • 8 verified cross-references
  • Primary manufacturer: Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Tester,oxygen Mask, cataloged under National Stock Number 6695-00-564-9500, is classified within Federal Supply Class 6695 (No Item Name Available) of the Instruments and Laboratory Equipment 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 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6695-00-564-9500
Primary Part NumberMQ-1
Item NameTester,oxygen Mask
FSC / FSG6695 / 66 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
General Characteristics Item DescriptionTESTER CONSISTS OF CASE 1,OXYGEN EQUIPMENT WHICH INCLUDES FLOW INDICATOR 1,PRESSURE GAGE 1,OXYGEN REGULATOR 1,MASK HOSE 1,INLET FITTING T-FITTING 1;COMMUNICATIONS AND GOGGLE EQUIPMENT WHICH INCLUDES POWER UNIT 1,HEADSET-MICROPHONE-GOGGLE EQUIPMENT TEST CIRCUIT 1;CASE MADE OF FIBERGLASS,ALUMINUM OR FIBERBOARD MATERIAL;FINISH DURABLE BLACK PER NO 33538 OF FED-STD-595;PANEL IN CASE RECESSED;CASE DIMENSIONS 12.0 IN. DEPTH BY 17.0 IN. LONG BY 10.0 IN. HIGH,3.062 INCH OF HEIGHT ARE TOP OF CASE;POWER UNIT CAPABLE OF CONVERTING 115 VAC,60 HZ;OUTPUT 28VDC,200MA;6 FOOT HEAVY DUTY ELECTRICAL CORD VDC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-043-22296503 INTERCHANGEABLE
Nut,plain,hexagon
International Business Machines Corp Parts Order Center Dept E - 54
3110-00-100-6150 INTERCHANGEABLE
Ball,bearing
5305-00-206-16656503 INTERCHANGEABLE
Screw,cap,hexagon Head
Hyster-Yale Group, Inc.
5975-00-284-69762523 INTERCHANGEABLE
Box Connector,electrical
Abb Installation Products Inc
4920-00-334-4807 INTERCHANGEABLE
Fixture,aircraft Maintenance
6520-00-523-1120 INTERCHANGEABLE
Wheel,abrasive
1680-00-590-37696503 INTERCHANGEABLE
Parts Kit,actuator
Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc
5950-00-647-5707 INTERCHANGEABLE
Transformer,power
5960-01-061-1774 INTERCHANGEABLE
Electron Tube
6695-01-097-0441TA MQ-1A INTERCHANGEABLE
Tester,oxygen Mask
Transaero, Inc.
Cross-Reference Index
Part NumberManufacturer
MQ-1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
T25620TYPEMQ1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILT25620TYPEMQ1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
6503 Tec Air Service Inc (USA)
1714 Winding Specialists Co., Inc (USA)
MQ-1A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-T-25620 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
OMHT Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc (USA)
Related Parts
5310-00-043-2229INTERCHANGEABLE
NUT,PLAIN,HEXAGON
6503
3110-00-100-6150INTERCHANGEABLE
BALL,BEARING
5305-00-206-1665INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
6503
5975-00-284-6976INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
2523
4920-00-334-4807INTERCHANGEABLE
FIXTURE,AIRCRAFT MAINTENANCE
6520-00-523-1120INTERCHANGEABLE
WHEEL,ABRASIVE
1680-00-590-3769INTERCHANGEABLE
PARTS KIT,ACTUATOR
6503
5950-00-647-5707INTERCHANGEABLE
TRANSFORMER,POWER
5960-01-061-1774INTERCHANGEABLE
ELECTRON TUBE
6695-01-097-0441INTERCHANGEABLE
TESTER,OXYGEN MASK
TA MQ-1A
3920-01-111-0149INTERCHANGEABLE
TRUCK,HAND
6503
2530-01-152-7888INTERCHANGEABLE
ADJUSTER,SLACK,BRAKE
KN47011

Frequently Asked Questions

What is NSN 6695-00-564-9500?

NSN 6695-00-564-9500 is a Tester,oxygen Mask, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 6695 (No Item Name Available). Status: active.

What are the part numbers for NSN 6695-00-564-9500?

NSN 6695-00-564-9500 has 8 cross-referenced part numbers: MQ-1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), T25620TYPEMQ1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILT25620TYPEMQ1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 6503 (Tec Air Service Inc), 1714 (Winding Specialists Co., Inc) and 3 more.

What NSN replaces 6695-00-564-9500?

There are 12 known substitutes for 6695-00-564-9500: 5310-00-043-2229, 3110-00-100-6150, 5305-00-206-1665 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MQ-1?

Key specifications for MQ-1: General Characteristics Item Description: TESTER CONSISTS OF CASE 1,OXYGEN EQUIPMENT WHICH INCLUDES FLOW INDICATOR 1,PRESSURE GAGE 1,OXYGEN REGULATOR 1,MASK HOSE 1,INLET FITTING T-FITTING 1;COMMUNICATIONS AND GOGGLE EQUIPMENT WHICH INCLUDES POWER UNIT 1,HEADSET-MICROPHONE-GOGGLE EQUIPMENT TEST CIRCUIT 1;CASE MADE OF FIBERGLASS,ALUMINUM OR FIBERBOARD MATERIAL;FINISH DURABLE BLACK PER NO 33538 OF FED-STD-595;PANEL IN CASE RECESSED;CASE DIMENSIONS 12.0 IN. DEPTH BY 17.0 IN. LONG BY 10.0 IN. HIGH,3.062 INCH OF HEIGHT ARE TOP OF CASE;POWER UNIT CAPABLE OF CONVERTING 115 VAC,60 HZ;OUTPUT 28VDC,200MA;6 FOOT HEAVY DUTY ELECTRICAL CORD VDC; Special Features: ITEM IS A PORTABLE TESTER FOR PRE FLIGHT CHECK OF PRESSURE DEMAND OXYGEN MASKS,PERSONAL INTERCOM EQUIPMENT AND EEU-2P GOGGLES. 2 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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