The Timer,stop, cataloged under National Stock Number 6645-00-975-2103, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 22 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6645-00-975-2103 |
| Item Name | Timer,stop |
| FSC / FSG | 6645 / 66 — Time Measuring Instruments |
| Status | ACTIVE |
| FSC Application Data | TIMER,STOP,EXCEPT GUIDED MISSILE |
| Frequency in Hertz | 50.0 |
| Current Type | AC |
| Control Type | SWITCH |
| Time Indicator Total Capacity | 60 MIN |
| Mounting Method | PANEL |
| DC Operated Clutch | NOT INCLUDED |
| Voltage in Volts | 220.0 |
| Reset Type | ELECTRIC AND MANUAL |
| Inscription Color | BLACK |
| Timer Type | ELECTRICAL |
| Hand Designation and Quantity | 3 SWEEP |
| Hand Color | BLACK AND RED |
| Dial Size | 3-3/16 IN. DIA DIAL IN |
| Color | BLACK |
| Surface Treatment | PAINT CASE |
| Dial Minimum Graduation | 1/100 MIN |
| Material | ALUMINUM OR STEEL CASE |
| Dial Background Color | WHITE |
| Operation Method | SYNCHRONOUS MOTOR |
| Fast Hand Speed | 1 REVOLUTION PER 100 SEC |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY OPERATION METHOD,VOLTAGE IN VOLTS,CURRENT TYPE,FREQUENCY IN HERTZ,RESET TYPE,CONTROL TYPE,DIAL SIZE,DIAL BACKGROUND COLOR,INSCRIPTION,AND HAND COLOR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| S1-3H60PER | 3/1 Design control — primary reference Standard Electric Time Corp |
NSN 6645-00-975-2103 is a Timer,stop, classified under FSC 6645, Time Measuring Instruments. Status: active.
Key specifications for 6645-00-975-2103: Overall Height: 5.750 INCHES NOMINAL IN; FSC Application Data: TIMER,STOP,EXCEPT GUIDED MISSILE; Frequency in Hertz: 50.0; Current Type: AC. 22 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.