The Ammeter, cataloged under National Stock Number 6625-00-649-3881, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Hoyt Electrical Instrument Works, Inc. Dba Hoyt Electrical Instrument Works Inc. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6625-00-649-3881 |
| Primary Part Number | 531 |
| Item Name | Ammeter |
| FSC / FSG | 6625 / 66 — No Item Name Available |
| Manufacturer | Hoyt Electrical Instrument Works, Inc. Dba Hoyt Electrical Instrument Works Inc |
| Status | ACTIVE |
| Meter Body Diameter Behind Mounting Flange | 2.093 INCHES NOMINAL IN |
| Circuit Attachment Method and Quantity | 2 THREADED STUD |
| Meter Depth Behind Mounting Flange | 1.046 INCHES NOMINAL IN |
| Mounting Arrangement Style | THREE HOLE/STUD BOLT CIRCLE |
| Dial Scale Marking Color | BLACK SINGLE INDICATOR SINGLE RANGE |
| Circuit Current for Which Designed | DC |
| Sensitivity Rating | 50.0 MILLIVOLTS |
| Scale Division Quantity | 20 SINGLE INDICATOR SINGLE RANGE |
| Movement Type | MOVING COIL, PERMANENT MAGNET |
| Style Designator | ROUND FLUSH MTG |
| Color | UNABLE TO DECODE |
| Overall Diameter | 2.687 INCHES NOMINAL IN |
| Mounting Bolt Circle Diameter | 2.390 INCHES NOMINAL IN |
| Movement Suspension Method | JEWEL PIVOT BASE |
| Mounting Facility Type and Quantity | 3 UNTHREADED HOLE(S) |
| Installation Design | PANEL |
| Accuracy in Percent | -5.0 TO 5.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE |
| Measurement Range | -20.0 TO 20.0 AMPERES, DC SINGLE INDICATOR SINGLE RANGE |
| Mounting Hole Diameter | 0.128 INCHES NOMINAL IN |
| Meter Body Diameter Behind Mounting Flange | 2.093 INCHES NOMINAL IN |
| Circuit Attachment Method and Quantity | 2 THREADED STUD |
| Meter Depth Behind Mounting Flange | 1.046 INCHES NOMINAL IN |
| Mounting Arrangement Style | THREE HOLE/STUD BOLT CIRCLE |
| Dial Scale Marking Color | BLACK SINGLE INDICATOR SINGLE RANGE |
| Circuit Current for Which Designed | DC |
| Sensitivity Rating | 50.0 MILLIVOLTS |
| Scale Division Quantity | 20 SINGLE INDICATOR SINGLE RANGE |
| Movement Type | MOVING COIL, PERMANENT MAGNET |
| Style Designator | ROUND FLUSH MTG |
| Color | UNABLE TO DECODE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Shelf Life Code | 0 |
| Criticality Code | N |
| Unit of Issue | EA |
| SMR Code | LN |
| Part Number | Manufacturer |
|---|---|
| 531 PRIMARY | Hoyt Electrical Instrument Works, Inc. Dba Hoyt Electrical Instrument Works Inc (USA) |
NSN 6625-00-649-3881 is a Ammeter, manufactured by Hoyt Electrical Instrument Works, Inc. Dba Hoyt Electrical Instrument Works Inc, classified under FSC 6625 (No Item Name Available). Status: active.
NSN 6625-00-649-3881 has 1 cross-referenced part number: 531 (Hoyt Electrical Instrument Works, Inc. Dba Hoyt Electrical Instrument Works Inc).
There are 3 known substitutes for 6625-00-649-3881: 6625-00-188-3739, 6625-00-189-7026, 6625-00-423-5345. Verify interchangeability with system specifications before substitution.
Key specifications for 531: Meter Body Diameter Behind Mounting Flange: 2.093 INCHES NOMINAL IN; Circuit Attachment Method and Quantity: 2 THREADED STUD; Meter Depth Behind Mounting Flange: 1.046 INCHES NOMINAL IN; Mounting Arrangement Style: THREE HOLE/STUD BOLT CIRCLE. 30 total characteristics are documented in the Federal Logistics Information System.