The Meter,time Totalizing, cataloged under National Stock Number 6645-01-156-6741, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 19 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6645-01-156-6741 |
| Primary Part Number | 3T8325 |
| Item Name | Meter,time Totalizing |
| FSC / FSG | 6645 / 66 — Time Measuring Instruments |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Electrical Movement Type | SOLID STATE |
| Indicator Type | DRUM REGISTER |
| Terminal Quantity | 2 |
| Background Color | BLACK BACKGROUND ON HOUR WHEELS |
| Movement Type | ELECTRICAL |
| Current Type | DC |
| Terminal Type | WIRE LEAD |
| Overall Diameter | 61.5 MILLIMETERS NOMINAL MM |
| Smallest Increment Indicated | 1.00 |
| Marking Color | WHITE NUMERALS FOR HOURS |
| Maximum Measurement | 9999.00 |
| Hermetic Protection | NOT PROVIDED |
| Unit Type | MOUNTED |
| Reset Feature | NOT PROVIDED |
| Mounting Configuration | U-CLAMP MOUNTED |
| Material | ALUMINUM OR STEEL CASE |
| Mounting Type | CLAMP |
| Voltage Rating | 24.0 VOLTS NOMINAL |
| Measurement Unit | HOURS |
| 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 |
|---|---|
| 3T8325 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 6645-01-156-6741 is a Meter,time Totalizing, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 6645, Time Measuring Instruments. Status: active.
NSN 6645-01-156-6741 has 1 manufacturer part number on file: 3T8325 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 3T8325: Electrical Movement Type: SOLID STATE; Indicator Type: DRUM REGISTER; Terminal Quantity: 2; Background Color: BLACK BACKGROUND ON HOUR WHEELS. 19 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.