PartsTable TECHNICAL DATA SHEET
NSN 6645-01-285-4284Government record, cited

Chronometer6645-01-285-4284

NSN 6645-01-285-4284 · NIIN 012854284 · Part number M880A
Davtron · FSC 6645 — Time Measuring Instruments · FSG 66 — Instruments and Laboratory Equipment · CAGE 63131
Government record, cited
NSN 6645-01-285-4284 — this item is cataloged by the U.S. Government under National Stock Number 6645-01-285-4284. Manufacturer of record part number: M880A.
Also searched as  6645-01-285-4284 · 6645012854284 · NIIN 012854284 · 01-285-4284 · FSC 6645 Time Measuring Instruments · CAGE 63131 · M880A
Nearby stock numbers  ·
Features
  • Chronometer — FSC 6645
  • Scale Quantity: 3
  • Scale Name: 24 HOUR
  • Overall Diameter: 3.175 INCHES NOMINAL IN
  • Scale Range: +0.0 TO 24.0 HOUR
  • Dial Outside Diameter: 3.125 INCHES IN
  • Graduation Unit: 1.000 HOUR
  • 1 manufacturer part number on file
Identification
  • NSN: 6645-01-285-4284
  • NIIN: 012854284
  • FSC: 6645 — Time Measuring Instruments
  • FSG: 66 — Instruments and Laboratory Equipment
  • Primary part number: M880A
  • Manufacturer: Davtron
General Description

The Chronometer, cataloged under National Stock Number 6645-01-285-4284, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Davtron. Government technical data includes 6 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.

Technical Specifications
ParameterValue
NSN6645-01-285-4284
Primary Part NumberM880A
Item NameChronometer
FSC / FSG6645 / 66 — Time Measuring Instruments
ManufacturerDavtron
StatusACTIVE
Scale Quantity3
Scale Name24 HOUR
Overall Diameter3.175 INCHES NOMINAL IN
Scale Range+0.0 TO 24.0 HOUR
Dial Outside Diameter3.125 INCHES IN
Graduation Unit1.000 HOUR
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL Q — CCL Item — Commerce Control List
HazardHazardous per DLA record (HMIC Y)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
M880A PRIMARY Davtron (USA)
No interchangeability data on file.
Other items in FSC 6645 — Time Measuring Instruments
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
6645-00-001-1256
6645-00-001-1256 · Item name not on file
6645-00-001-4498
6645-00-001-4498 · Item name not on file
6645-00-001-4584
6645-00-001-4584 · Item name not on file
6645-00-001-9400
METER,TIME TOTALIZING
6645-00-003-0327
6645-00-003-0327 · Item name not on file
6645-00-003-0328
6645-00-003-0328 · Item name not on file
6645-00-003-0337
6645-00-003-0337 · Item name not on file
6645-00-003-0338
METER,TIME TOTALIZING

Frequently Asked Questions

What is NSN 6645-01-285-4284?

NSN 6645-01-285-4284 is a Chronometer, manufactured by Davtron, classified under FSC 6645, Time Measuring Instruments. Status: active.

What part numbers are listed for NSN 6645-01-285-4284?

NSN 6645-01-285-4284 has 1 manufacturer part number on file: M880A (Davtron).

What are the specifications of M880A?

Key specifications for M880A: Scale Quantity: 3; Scale Name: 24 HOUR; Overall Diameter: 3.175 INCHES NOMINAL IN; Scale Range: +0.0 TO 24.0 HOUR. 6 specifications are documented in the U.S. Government catalog.

Is NSN 6645-01-285-4284 hazardous material?

Hazardous per DLA record (HMIC Y). Hazard information on this page is shown exactly as it appears in the DLA record.

What is the DEMIL code for NSN 6645-01-285-4284?

NSN 6645-01-285-4284 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.

Sources

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.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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