The Ammeter, cataloged under National Stock Number 6625-00-740-6855, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6625-00-740-6855 |
| Primary Part Number | 331C149H09 |
| Item Name | Ammeter |
| FSC / FSG | 6625 / 66 — No Item Name Available |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| Status | ACTIVE |
| Dielectric Withstanding Voltage in Volts | 3000.0 |
| Dial Scale Marking Color | BLACK SINGLE INDICATOR SINGLE RANGE |
| Scale Division Quantity | 50 SINGLE INDICATOR SINGLE RANGE |
| Overall Diameter | 2.695 INCHES MAXIMUM IN |
| Circuit Attachment Method and Quantity | 2 SOLDER LUG |
| Circuit Construction Type | NONELECTRONIC |
| Mounting Facility Type and Quantity | 3 UNTHREADED HOLE(S) |
| Material | STEEL |
| Nuclear Hardness Critical Feature | NONHARDENED |
| Style Designator | ROUND FLUSH MTG |
| Features Provided | ZERO ADJUSTER |
| Mounting Bolt Circle Diameter | 1.220 INCHES NOMINAL IN |
| Measurement Range | +0.0 TO 100.0 MICROAMPERES, DC SINGLE INDICATOR SINGLE RANGE |
| Accuracy in Percent | -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE |
| Environmental Protection | DUST RESISTANT |
| Mounting Arrangement Style | THREE HOLE/STUD BOLT CIRCLE |
| Indicator Type | DIAL W/POINTER |
| Installation Design | PANEL |
| Movement Type | MOVING COIL, PERMANENT MAGNET |
| Meter Depth Behind Mounting Flange | 2.170 INCHES MAXIMUM IN |
| Meter Body Diameter Behind Mounting Flange | 2.210 INCHES MAXIMUM IN |
| Scale Selection Method | TERMINAL |
| Panel for Which Designed | MAGNETIC |
| Movement Suspension Method | JEWEL PIVOT BASE |
| Mounting Hole Diameter | 0.125 INCHES NOMINAL IN |
| Power Source | EXTERNAL |
| Scale Graduation Type | LINEAR SINGLE INDICATOR SINGLE RANGE |
| Pointer Color | BLACK SINGLE INDICATOR SINGLE RANGE |
| Color | UNABLE TO DECODE |
| Acquisition Status | ACTIVE |
| Successor | 6625-00-010-6406 (10183082) |
| HAZMAT | No |
| Weight | 0.0100 lbs |
| Cube | 0.0010 cu ft |
| Part Number | Manufacturer |
|---|---|
| 331C149H09 | E I L Instruments Inc (USA) |
| 56HSR | Hickok Waekon Llc (USA) |
| 331C149H09 | Westinghouse Electric Corp (USA) |
| 331C149H09 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| 2521 | Solartron Electronics Inc Weston Instruments Div (USA) |
NSN 6625-00-740-6855 is a Ammeter, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 6625 (No Item Name Available). Status: active.
NSN 6625-00-740-6855 has 5 cross-referenced part numbers: 331C149H09 (E I L Instruments Inc), 56HSR (Hickok Waekon Llc), 331C149H09 (Westinghouse Electric Corp), 331C149H09 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 2521 (Solartron Electronics Inc Weston Instruments Div).
There are 9 known substitutes for 6625-00-740-6855: 6625-00-010-6406, 6625-00-510-6628, 6625-00-580-1885 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for 331C149H09: Dielectric Withstanding Voltage in Volts: 3000.0; Dial Scale Marking Color: BLACK SINGLE INDICATOR SINGLE RANGE; Scale Division Quantity: 50 SINGLE INDICATOR SINGLE RANGE; Overall Diameter: 2.695 INCHES MAXIMUM IN. 30 total characteristics are documented in the Federal Logistics Information System.