The Clock,wall, cataloged under National Stock Number 6645-01-101-4958, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is M Z Technologies, Inc. Government technical data includes 4 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6645-01-101-4958 |
| Primary Part Number | 12 HOUR DIAL 8 1/2IN |
| Item Name | Clock,wall |
| FSC / FSG | 6645 / 66 — Time Measuring Instruments |
| Manufacturer | M Z Technologies, Inc |
| Status | ACTIVE |
| Current Type | DC |
| Increment in Hours | 12.000 |
| Outside Diameter | 8.500 INCHES NOMINAL IN |
| Dial Quantity | 1 |
| 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 |
|---|---|
| 12 HOUR DIAL 8 1/2IN PRIMARY | M Z Technologies, Inc (USA) |
| Reference | Meaning |
|---|---|
| 12 HOUR DIAL 8 1/2IN | 5/9 Secondary reference Naval Inventory Control Point Mechanicsburg |
| MIL-C-1194D | 5/9 Secondary reference U.S. Government activity |
| A-A-2883 | 4/1 Identification reference Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| A-A-2717 | 5/9 Secondary reference Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
NSN 6645-01-101-4958 is a Clock,wall, manufactured by M Z Technologies, Inc, classified under FSC 6645, Time Measuring Instruments. Status: active.
NSN 6645-01-101-4958 has 1 manufacturer part number on file: 12 HOUR DIAL 8 1/2IN (M Z Technologies, Inc).
1 possible match (shared part number, not a government interchangeability claim): 6645-01-101-4959. Verify interchangeability with system specifications before substitution.
Key specifications for 12 HOUR DIAL 8 1/2IN: Current Type: DC; Increment in Hours: 12.000; Outside Diameter: 8.500 INCHES NOMINAL IN; Dial Quantity: 1. 4 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.