The Timer,interval, cataloged under National Stock Number 6645-01-425-1673, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Howell Laboratories Inc Dba Howell Laboratories Inc. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6645-01-425-1673 |
| Primary Part Number | 6555-01 |
| Item Name | Timer,interval |
| FSC / FSG | 6645 / 66 — Time Measuring Instruments |
| Manufacturer | Howell Laboratories Inc Dba Howell Laboratories Inc |
| Status | ACTIVE |
| Frequency in Hertz | 60.0 |
| Current Type | AC |
| Mounting Method | FLANGE TYPE FOR PANEL |
| Voltage in Volts | 120.0 |
| Reset Type | MANUAL |
| Timer Type | ELECTRICAL |
| 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 |
|---|---|
| 6555-01 PRIMARY | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| Reference | Meaning |
|---|---|
| 6727 REV A ITEM 12 | 5/1 Secondary reference Howell Laboratories Inc Dba Howell Laboratories Inc |
NSN 6645-01-425-1673 is a Timer,interval, manufactured by Howell Laboratories Inc Dba Howell Laboratories Inc, classified under FSC 6645, Time Measuring Instruments. Status: active.
NSN 6645-01-425-1673 has 1 manufacturer part number on file: 6555-01 (Howell Laboratories Inc Dba Howell Laboratories Inc).
Key specifications for 6555-01: Overall Height: 2.120 INCHES NOMINAL IN; Frequency in Hertz: 60.0; Current Type: AC; Mounting Method: FLANGE TYPE FOR PANEL. 6 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.