The Ammeter, cataloged under National Stock Number 6625-00-811-4424, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Triplett (bluffton) Corporation Dba Lfe Instruments. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6625-00-811-4424 |
| Primary Part Number | 321HR |
| Item Name | Ammeter |
| FSC / FSG | 6625 / 66 — No Item Name Available |
| Manufacturer | Triplett (bluffton) Corporation Dba Lfe Instruments |
| Status | CANCELLED |
| Measurement Range | -100.0 TO 100.0 MICROAMPERES, DC SINGLE INDICATOR SINGLE RANGE |
| Pointer Color | WHITE SINGLE INDICATOR SINGLE RANGE |
| Mounting Facility Type and Quantity | 3 UNTHREADED HOLE(S) |
| Scale Selection Method | TERMINAL |
| Circuit Current for Which Designed | DC |
| Overall Diameter | 2.695 INCHES MAXIMUM IN |
| Dial Scale Marking Color | WHITE SINGLE INDICATOR SINGLE RANGE |
| Accuracy in Percent | -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE |
| Style Designator | ROUND FLUSH MTG |
| FSC Application Data | TEST SET,ELECTRONIC EQUIPMENT |
| Test Data Document | 81349-MIL-M-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.). |
| Panel for Which Designed | MAGNETIC |
| Scale Division Quantity | 50 SINGLE INDICATOR SINGLE RANGE |
| Environmental Protection | DUST RESISTANT |
| Nuclear Hardness Critical Feature | NONHARDENED |
| Color | UNABLE TO DECODE |
| Mounting Bolt Circle Diameter | 2.440 INCHES NOMINAL IN |
| Indicator Type | DIAL W/POINTER |
| Specification/standard Data | 81349-MIL-M-10304/5 GOVERNMENT SPECIFICATION |
| Meter Depth Behind Mounting Flange | 1.600 INCHES MAXIMUM IN |
| Meter Body Diameter Behind Mounting Flange | 2.210 INCHES MAXIMUM IN |
| Sensitivity Rating | 150.0 MILLIVOLTS |
| Mounting Arrangement Style | THREE HOLE/STUD BOLT CIRCLE |
| Movement Type | MOVING COIL, PERMANENT MAGNET |
| Movement Suspension Method | JEWEL PIVOT BASE |
| Mounting Hole Diameter | 0.125 INCHES NOMINAL IN |
| Features Provided | ZERO ADJUSTER |
| Dielectric Withstanding Voltage in Volts | 3000.0 |
| Circuit Attachment Method and Quantity | 2 THREADED STUD |
| Acquisition Status | CANCELLED |
| Successor | 6625-00-220-9986 |
| HAZMAT | No |
| Shelf Life Code | 0 |
| Criticality Code | Q |
| Unit of Issue | EA |
| SMR Code | JN |
| Part Number | Manufacturer |
|---|---|
| 321HR | Triplett (bluffton) Corporation Dba Lfe Instruments (USA) |
| MIL-PRF-10304/5 | 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 |
| MR26B1H1DCUAR | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
NSN 6625-00-811-4424 is a Ammeter, manufactured by Triplett (bluffton) Corporation Dba Lfe Instruments, classified under FSC 6625 (No Item Name Available). Status: cancelled.
NSN 6625-00-811-4424 has 4 cross-referenced part numbers: 321HR (Triplett (bluffton) Corporation Dba Lfe Instruments), MIL-PRF-10304/5 (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), MR26B1H1DCUAR (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).
There are 12 known substitutes for 6625-00-811-4424: 6625-00-894-0434, 6625-00-220-9986, 6625-00-535-9735 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 321HR: Measurement Range: -100.0 TO 100.0 MICROAMPERES, DC SINGLE INDICATOR SINGLE RANGE; Pointer Color: WHITE SINGLE INDICATOR SINGLE RANGE; Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S); Scale Selection Method: TERMINAL. 30 total characteristics are documented in the Federal Logistics Information System.
NSN 6625-00-811-4424 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.