The Timer,sequential, cataloged under National Stock Number 6645-01-503-7565, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil. Government technical data includes 9 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6645-01-503-7565 |
| Primary Part Number | 43-105-121 |
| Item Name | Timer,sequential |
| FSC / FSG | 6645 / 66 — Time Measuring Instruments |
| Manufacturer | Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil |
| Status | ACTIVE |
| Frequency in Hertz | 60.0 |
| Current Type | AC |
| Control Type | ANY ACCEPTABLE |
| Interval Expiration Signalling Device | INCLUDED |
| Independently Operated Clock | NOT INCLUDED |
| Voltage in Volts | 120.0 |
| Reset Type | ELECTRIC |
| Timer Type | ELECTRICAL |
| Automatic Electric Circuit Control Switch | NOT INCLUDED |
| 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 |
|---|---|
| 43-105-121 PRIMARY | Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil (USA) |
| Reference | Meaning |
|---|---|
| 43-105-21 | 5/9 Secondary reference Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil |
| 43-105-21 | 5/9 Secondary reference Ssac Inc |
| 1298-20-D FIND 2 | D/9 Drawing number reference only Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil |
NSN 6645-01-503-7565 is a Timer,sequential, manufactured by Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil, classified under FSC 6645, Time Measuring Instruments. Status: active.
NSN 6645-01-503-7565 has 1 manufacturer part number on file: 43-105-121 (Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil).
Key specifications for 43-105-121: Frequency in Hertz: 60.0; Current Type: AC; Control Type: ANY ACCEPTABLE; Interval Expiration Signalling Device: INCLUDED. 9 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.