The Stopwatch, cataloged under National Stock Number 6645-01-041-3333, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Heuer Time and Electronics Corp. Government technical data includes 25 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. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6645-01-041-3333 |
| Primary Part Number | 403-202 |
| Item Name | Stopwatch |
| FSC / FSG | 6645 / 66 — Time Measuring Instruments |
| Manufacturer | Heuer Time and Electronics Corp |
| Status | ACTIVE |
| Scale Quantity | 2 |
| Major Graduation Color | BLACK |
| Winding Method | STEM |
| Control Method | START, STOP AND FLYBACK FROM CROWN |
| Movement Type | CONTINUOUS RUNNING |
| Scale Name | MINUTE TOTALIZING AND SECOND |
| Face Type | CLOSED |
| Winding Device Location | TOP |
| Scale Range | +0.0 TO 15.0 MINUTE AND +0.0 TO 60.0 SECOND |
| Dial Outside Diameter | 53.0 MILLIMETERS MM |
| Maximum Test Pressure in Psi | 45.0 |
| Jewel Quantity | 7 |
| Dial Scale Marking Luminosity | NONLUMINOUS |
| Graduation Unit | 15.000 MINUTE AND 60.000 SECOND |
| Maximum Running Time | 16.0 HOURS |
| Color | WHITE BACKGROUND |
| Totalizer Dial Range in Minutes | +0.0 TO 15.0 |
| Dial Scale Marking Color | BLACK AND RED |
| Material | GLASS FIBER CASE |
| Submersibility | SUBMERSIBLE |
| Crystal Type | ANY ACCEPTABLE |
| Furnished Items | SEPERATE TOTALIZER DIAL AND SHOCKPROOF FEATURE AND WATERPROOF FEATURE |
| Bezel Type | FRICTION |
| Minor Graduation Color | RED |
| Sweep Hand Quantity | 2 |
| 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 |
|---|---|
| 403-202 PRIMARY | Heuer Time and Electronics Corp (USA) |
NSN 6645-01-041-3333 is a Stopwatch, manufactured by Heuer Time and Electronics Corp, classified under FSC 6645, Time Measuring Instruments. Status: active.
NSN 6645-01-041-3333 has 1 manufacturer part number on file: 403-202 (Heuer Time and Electronics Corp).
2 possible matches (shared part number, not a government interchangeability claim): 6930-01-353-5026, 4140-01-424-0611. Verify interchangeability with system specifications before substitution.
Key specifications for 403-202: Scale Quantity: 2; Major Graduation Color: BLACK; Winding Method: STEM; Control Method: START, STOP AND FLYBACK FROM CROWN. 25 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.