The Timer,sequential, cataloged under National Stock Number 6645-01-643-5845, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Littelfuse, Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6645-01-643-5845 |
| Primary Part Number | TAC1223 |
| Item Name | Timer,sequential |
| FSC / FSG | 6645 / 66 — Time Measuring Instruments |
| Manufacturer | Littelfuse, Inc. |
| Status | ACTIVE |
| 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 |
|---|---|
| TAC1223 PRIMARY | Littelfuse, Inc. (USA) |
| Reference | Meaning |
|---|---|
| TAC1223 | 5/9 Secondary reference Ssac Inc |
| 30034 | D/9 Drawing number reference only Hdt Expeditionary Systems Inc |
NSN 6645-01-643-5845 is a Timer,sequential, manufactured by Littelfuse, Inc., classified under FSC 6645, Time Measuring Instruments. Status: active.
NSN 6645-01-643-5845 has 1 manufacturer part number on file: TAC1223 (Littelfuse, Inc.).
Key specifications for TAC1223: Part Name Assigned by Controlling Agency: TIMER SEQUENTIAL. 0 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.