The Timer,stop, cataloged under National Stock Number 6645-00-810-7229, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Standard Electric Time Corp. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6645-00-810-7229 |
| Primary Part Number | MST500-2-18-5-40 |
| Item Name | Timer,stop |
| FSC / FSG | 6645 / 66 — Time Measuring Instruments |
| Manufacturer | Standard Electric Time Corp |
| Status | ACTIVE |
| Frequency in Hertz | 60.0 |
| Current Type | AC |
| Control Type | LEVER |
| Time Indicator Total Capacity | 30 SEC |
| Mounting Method | PANEL |
| DC Operated Clutch | INCLUDED |
| Voltage in Volts | 115.0 |
| Reset Type | ELECTRIC |
| Inscription Color | WHITE |
| Timer Type | ELECTRICAL |
| Hand Designation and Quantity | 2 SWEEP |
| Hand Color | WHITE |
| Dial Size | 3-13/16 IN. DIA DIAL IN |
| Dial Minimum Graduation | 0.001 SEC |
| Operating DC Voltage in Volts | 24.0 |
| Dial Background Color | BLACK |
| Operation Method | SYNCHRONOUS MOTOR |
| Fast Hand Speed | 2 REVOLUTIONS PER MIN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| MST500-2-18-5-40 PRIMARY | Standard Electric Time Corp (USA) |
NSN 6645-00-810-7229 is a Timer,stop, manufactured by Standard Electric Time Corp, classified under FSC 6645, Time Measuring Instruments. Status: active.
NSN 6645-00-810-7229 has 1 manufacturer part number on file: MST500-2-18-5-40 (Standard Electric Time Corp).
Key specifications for MST500-2-18-5-40: Overall Height: 4.810 INCHES NOMINAL IN; Frequency in Hertz: 60.0; Current Type: AC; Control Type: LEVER. 18 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.