The Ammeter, cataloged under National Stock Number 6625-00-840-5644, 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 - Mitchel Field. Government technical data includes 28 verified specifications, 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: Cancelled. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6625-00-840-5644 |
| Primary Part Number | 1753983 |
| Item Name | Ammeter |
| FSC / FSG | 6625 / 66 — No Item Name Available |
| Manufacturer | Lockheed Martin Corporation Div Rms - Mitchel Field |
| Status | CANCELLED |
| Mounting Stud Length | 0.530 INCHES NOMINAL IN |
| Power Source | EXTERNAL |
| Features Provided | MAGNETIC SHIELD AND ZERO ADJUSTER |
| Dial Scale Marking Color | BLACK SINGLE INDICATOR SINGLE RANGE |
| Measurement Range | +0.0 TO 50.0 MILLIAMPERES, DC SINGLE INDICATOR SINGLE RANGE |
| Pointer Color | BLACK SINGLE INDICATOR SINGLE RANGE |
| Circuit Construction Type | NONELECTRONIC |
| Circuit Current for Which Designed | DC |
| Circuit Attachment Method and Quantity | 2 THREADED STUD |
| Mounting Facility Type and Quantity | 4 THREADED STUD(S) |
| Material | GLASS AND PLASTIC |
| FSC Application Data | TEST SET,ELECTRONIC EQUIPMENT |
| Color | UNABLE TO DECODE |
| Mounting Arrangement Style | FOUR HOLE/STUD RECTANGULAR/SQUARE |
| Sensitivity Rating | 57.0 MILLIVOLTS |
| Meter Body Diameter Behind Mounting Flange | 2.750 INCHES NOMINAL IN |
| Style Designator | RECTANGULAR FLUSH MTG |
| Panel for Which Designed | MAGNETIC OR NONMAGNETIC |
| Special Test Features | MEETS REQUIREMENTS OF ANSI C39.1 |
| Scale Division Quantity | 50 SINGLE INDICATOR SINGLE RANGE |
| Meter Depth Behind Mounting Flange | 1.700 INCHES NOMINAL IN |
| Nuclear Hardness Critical Feature | NONHARDENED |
| Movement Type | MOVING COIL, PERMANENT MAGNET |
| Indicator Type | DIAL W/POINTER |
| Accuracy in Percent | -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE |
| Installation Design | PANEL |
| Mounting Stud Diameter | 0.112 INCHES NOMINAL IN |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 2.250 INCHES NOMINAL IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Shelf Life Code | 0 |
| Criticality Code | N |
| Unit of Issue | EA |
| SMR Code | JN |
| Weight | 2.0000 lbs |
| Cube | 0.0139 cu ft |
| Part Number | Manufacturer |
|---|---|
| 27-0-50MADC | Simpson Electric Company, Inc. (USA) |
| 1753983 PRIMARY | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| 53SN | Jewell Instruments Llc (USA) |
| 160324 | Solartron Electronics Inc Weston Instruments Div (USA) |
| 27-04910 | Simpson Electric Company, Inc. (USA) |
| 27 | Simpson Electric Company, Inc. (USA) |
| 4910 | Simpson Electric Company, Inc. (USA) |
| 04910 | Simpson Electric Company, Inc. (USA) |
NSN 6625-00-840-5644 is a Ammeter, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 6625 (No Item Name Available). Status: cancelled.
NSN 6625-00-840-5644 has 8 cross-referenced part numbers: 27-0-50MADC (Simpson Electric Company, Inc.), 1753983 (Lockheed Martin Corporation Div Rms - Mitchel Field), 53SN (Jewell Instruments Llc), 160324 (Solartron Electronics Inc Weston Instruments Div), 27-04910 (Simpson Electric Company, Inc.) and 3 more.
There are 12 known substitutes for 6625-00-840-5644: 5999-01-093-9473, 6625-01-108-6559, 3110-00-084-8480 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 1753983: Mounting Stud Length: 0.530 INCHES NOMINAL IN; Power Source: EXTERNAL; Features Provided: MAGNETIC SHIELD AND ZERO ADJUSTER; Dial Scale Marking Color: BLACK SINGLE INDICATOR SINGLE RANGE. 30 total characteristics are documented in the Federal Logistics Information System.
NSN 6625-00-840-5644 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.