The Ammeter, cataloged under National Stock Number 6625-01-157-7883, is classified within Federal Supply Class 6625 (Electrical and Electronic Properties Measuring and Testing Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Yokogawa Corporation of America. Government technical data includes 26 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6625-01-157-7883 |
| Primary Part Number | 251-440LSRL |
| Item Name | Ammeter |
| FSC / FSG | 6625 / 66 — Electrical and Electronic Properties Measuring and Testing Instruments |
| Manufacturer | Yokogawa Corporation of America |
| Status | ACTIVE |
| Circuit Construction Type | NONELECTRONIC |
| Mounting Facility Type and Quantity | 2 THREADED STUD(S) |
| Meter Body Diameter Behind Mounting Flange | 2.700 INCHES MAXIMUM IN |
| FSC Application Data | TEST SET,ELECT. EQUIP. |
| Indicator Type | DIAL W/POINTER |
| Mounting Arrangement Style | TWO HOLE/STUD |
| Circuit Attachment Method and Quantity | 2 THREADED STUD |
| Meter Depth Behind Mounting Flange | 1.200 INCHES NOMINAL IN |
| Circuit Current for Which Designed | AC |
| Movement Type | MOVING IRON VANE |
| Accuracy in Percent | -2.0 TO 2.0 AT FULL SCALE SINGLE INDICATOR SINGLE RANGE |
| Mounting Stud Diameter | 0.112 INCHES NOMINAL IN |
| Special Test Features | MEETS REQUIREMENTS OF SPECIFICATION ANSI C-39.1 |
| Panel for Which Designed | NONMAGNETIC |
| Power Source | EXTERNAL |
| Style Designator | RECTANGULAR FLUSH MTG |
| Features Provided | ZERO ADJUSTER |
| Distance Between Mounting Facility Centers | 5.342 INCHES MINIMUM AND 5.370 INCHES MAXIMUM IN |
| Movement Suspension Method | TAUT BAND |
| Color | UNABLE TO DECODE |
| Pointer Color | BLACK SINGLE INDICATOR SINGLE RANGE |
| Environmental Protection | HUMIDITY RESISTANT AND SHOCK RESISTANT AND VIBRATION RESISTANT |
| Mounting Stud Length | 0.500 INCHES NOMINAL IN |
| Dial Scale Marking Color | BLACK SINGLE INDICATOR SINGLE RANGE |
| Material | PLASTIC |
| Scale Graduation Type | NONLINEAR SINGLE INDICATOR SINGLE RANGE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Unit of Issue | EA |
| Acquisition advice code | X |
| Part Number | Manufacturer |
|---|---|
| 536202081 | Eaton Corporation (USA) |
| 251-440LSRL PRIMARY | Yokogawa Corporation of America (USA) |
| Reference | Meaning |
|---|---|
| 50-251-440LSRL | 5/9 Secondary reference General Electric Co Instrument Products Section |
| 136202081 | C/1 Advisory reference — outside the item-of-supply concept Eaton Corporation |
| 50-251-440LSRL | C/1 Advisory reference — outside the item-of-supply concept Gkn Aerospace Services Ltd |
NSN 6625-01-157-7883 is a Ammeter, manufactured by Yokogawa Corporation of America, classified under FSC 6625, Electrical and Electronic Properties Measuring and Testing Instruments. Status: active.
NSN 6625-01-157-7883 has 2 manufacturer part numbers on file: 536202081 (Eaton Corporation), 251-440LSRL (Yokogawa Corporation of America).
Key specifications for 251-440LSRL: Circuit Construction Type: NONELECTRONIC; Mounting Facility Type and Quantity: 2 THREADED STUD(S); Meter Body Diameter Behind Mounting Flange: 2.700 INCHES MAXIMUM IN; Overall Height: 4.180 INCHES MAXIMUM IN. 26 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.