The Ammeter, cataloged under National Stock Number 6625-00-542-0539, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Lockheed Martin Corporation Div Rms. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6625-00-542-0539 |
| Primary Part Number | 7741891P1 |
| Item Name | Ammeter |
| FSC / FSG | 6625 / 66 — No Item Name Available |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | CANCELLED |
| Meter Depth Behind Mounting Flange | 1.600 INCHES NOMINAL IN |
| Scale Division Quantity | 10 SINGLE INDICATOR SINGLE RANGE |
| Environmental Protection | DUSTPROOF |
| Installation Design | PANEL |
| Specification/standard Data | 81349-MIL-PRF-10304/5 GOVERNMENT SPECIFICATION |
| Dial Scale Marking Color | BLACK SINGLE INDICATOR SINGLE RANGE |
| Material | PLASTIC |
| Surface Treatment | PAINT |
| Pointer Color | BLACK SINGLE INDICATOR SINGLE RANGE |
| Color | UNABLE TO DECODE |
| Accuracy in Percent | -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE |
| Indicator Type | DIAL W/POINTER |
| Test Data Document | 81349-MIL-PRF-10304 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Mounting Hole Diameter | 0.125 INCHES NOMINAL IN |
| Mounting Arrangement Style | THREE HOLE/STUD BOLT CIRCLE |
| Movement Type | MOVING COIL, PERMANENT MAGNET |
| FSC Application Data | TEST SET,ELECT. EQUIP. |
| Power Source | EXTERNAL |
| Features Provided | ZERO ADJUSTER |
| Measurement Range | +0.0 TO 10.0 AMPERES, DC SINGLE INDICATOR SINGLE RANGE |
| Dielectric Withstanding Voltage in Volts | 3000.0 |
| Mounting Facility Type and Quantity | 3 UNTHREADED HOLE(S) |
| Scale Selection Method | SWITCH |
| Movement Suspension Method | JEWEL PIVOT BASE |
| Mounting Bolt Circle Diameter | 2.440 INCHES NOMINAL IN |
| Sensitivity Rating | 75.0 MILLIVOLTS |
| Meter Body Diameter Behind Mounting Flange | 2.210 INCHES NOMINAL IN |
| Overall Diameter | 2.695 INCHES NOMINAL IN |
| Circuit Attachment Method and Quantity | 2 BINDING POST |
| Acquisition Status | CANCELLED |
| Successor | 6625-00-220-9986 |
| HAZMAT | No |
| Shelf Life Code | 0 |
| Criticality Code | Q |
| Unit of Issue | EA |
| SMR Code | ZN |
| Weight | 0.5000 lbs |
| Cube | 0.0208 cu ft |
| Part Number | Manufacturer |
|---|---|
| 7741891P1 | Lockheed Martin Corporation Div Rms (USA) |
| 2R10A | American Instrument Corp (USA) |
| 331C146H11 | Westinghouse Electric Corp (USA) |
| 331C146H11 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| 7741891P1 | General Electric Company (USA) |
| MR26W010DCAAR | Hughes Corp Div Weschler Electric (USA) |
| 754101 | Systron-Donner Corp Microwave/instrument Div (USA) |
| MR26W010DCAAR | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| MIL-M-10304/5 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| 200R627B | Ametek Inc Dba Ametek Iscd Div Iscd (USA) |
| 2R10A | Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc (USA) |
| MIL-PRF-10304/5 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
NSN 6625-00-542-0539 is a Ammeter, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 6625 (No Item Name Available). Status: cancelled.
NSN 6625-00-542-0539 has 12 cross-referenced part numbers: 7741891P1 (Lockheed Martin Corporation Div Rms), 2R10A (American Instrument Corp), 331C146H11 (Westinghouse Electric Corp), 331C146H11 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 7741891P1 (General Electric Company) and 7 more.
There are 8 known substitutes for 6625-00-542-0539: 6625-00-220-9986, 6625-00-725-8151, 6625-00-841-7570 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for 7741891P1: Meter Depth Behind Mounting Flange: 1.600 INCHES NOMINAL IN; Scale Division Quantity: 10 SINGLE INDICATOR SINGLE RANGE; Environmental Protection: DUSTPROOF; Installation Design: PANEL. 30 total characteristics are documented in the Federal Logistics Information System.
NSN 6625-00-542-0539 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.