The Timer,interval, cataloged under National Stock Number 6645-01-112-8900, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is U S Dept of Transportation Federal Aviation Administration. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6645-01-112-8900 |
| Primary Part Number | 471A1-24 |
| Item Name | Timer,interval |
| FSC / FSG | 6645 / 66 — Time Measuring Instruments |
| Manufacturer | U S Dept of Transportation Federal Aviation Administration |
| Status | ACTIVE |
| Frequency in Hertz | 60.0 |
| Current Type | AC |
| Dial Minimum Graduation Unit | 1.0 HOURS |
| Mounting Method | BRACKET(S) |
| Voltage in Volts | 115.0 |
| Timer Type | ELECTRICAL |
| Hand Designation and Quantity | 1 POINTER KNOB |
| Hand Color | RED |
| Switch Type | CAM ACTUATED |
| Control Switch Voltage in Volts | 115.0 |
| Current Rating | 0.250 AMPERES |
| Furnished Items | AUTOMATIC ELECTRIC CIRCUIT CONTROL SWITCH |
| Operation Method | SYNCHRONOUS MOTOR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Part Number | Manufacturer |
|---|---|
| 471A1-24 PRIMARY | U S Dept of Transportation Federal Aviation Administration (USA) |
| Reference | Meaning |
|---|---|
| JHP73-115 | 5/9 Secondary reference Hollingsworth John R Co |
| 471A1-24 | 5/9 Secondary reference Cramer Co Division of Chestnut Group Inc |
NSN 6645-01-112-8900 is a Timer,interval, manufactured by U S Dept of Transportation Federal Aviation Administration, classified under FSC 6645, Time Measuring Instruments. Status: active.
NSN 6645-01-112-8900 has 1 manufacturer part number on file: 471A1-24 (U S Dept of Transportation Federal Aviation Administration).
Key specifications for 471A1-24: Overall Height: 3.750 INCHES NOMINAL IN; Frequency in Hertz: 60.0; Current Type: AC; Dial Minimum Graduation Unit: 1.0 HOURS. 13 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.