PartsTable TECHNICAL DATA SHEET
NSN 6645-01-477-2532Government record, cited

Clock, Master Regulating6645-01-477-2532

NSN 6645-01-477-2532 · NIIN 014772532 · Part number 70748001A
Brandywine Communications · FSC 6645 — Time Measuring Instruments · FSG 66 — Instruments and Laboratory Equipment · CAGE 03NF8
Government record, cited
NSN 6645-01-477-2532 — this item is cataloged by the U.S. Government under National Stock Number 6645-01-477-2532. Manufacturer of record part number: 70748001A.
Also searched as  6645-01-477-2532 · 6645014772532 · NIIN 014772532 · 01-477-2532 · FSC 6645 Time Measuring Instruments · CAGE 03NF8 · 70748001A · TCS-MCM
Nearby stock numbers  ·
Features
  • Clock,master Regulating — FSC 6645
  • 2 manufacturer part numbers on file
  • Manufacturer of record: Brandywine Communications
Identification
  • NSN: 6645-01-477-2532
  • NIIN: 014772532
  • FSC: 6645 — Time Measuring Instruments
  • FSG: 66 — Instruments and Laboratory Equipment
  • Primary part number: 70748001A
  • Manufacturer: Brandywine Communications
General Description

The Clock,master Regulating, cataloged under National Stock Number 6645-01-477-2532, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Brandywine Communications. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Catalog Facts
Item NameClock,master Regulating
FSC / FSG6645 — Time Measuring Instruments (FSG 66)
ManufacturersBrandywine Communications (CAGE 03NF8)
Technical Specifications
ParameterValue
NSN6645-01-477-2532
Primary Part Number70748001A
Item NameClock,master Regulating
FSC / FSG6645 / 66 — Time Measuring Instruments
ManufacturerBrandywine Communications
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 1
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
6645-01-541-9114217A396 POSSIBLE MATCH
CLOCK,MASTER REGULATING
Possible match (shared part number)Lockheed Martin Corporation Div Rms - Manassas
Cross-Reference Index
Part NumberManufacturer
TCS-MCM Brandywine Communications (USA)
70748001A PRIMARY Brandywine Communications (USA)
Related Parts
6645-01-541-9114POSSIBLE MATCH
CLOCK,MASTER REGULATING
217A396

Frequently Asked Questions

What is NSN 6645-01-477-2532?

NSN 6645-01-477-2532 is a Clock,master Regulating, manufactured by Brandywine Communications, classified under FSC 6645, Time Measuring Instruments. Status: active.

What part numbers are listed for NSN 6645-01-477-2532?

NSN 6645-01-477-2532 has 2 manufacturer part numbers on file: TCS-MCM (Brandywine Communications), 70748001A (Brandywine Communications).

What NSN replaces 6645-01-477-2532?

1 possible match (shared part number, not a government interchangeability claim): 6645-01-541-9114. Verify interchangeability with system specifications before substitution.

Is NSN 6645-01-477-2532 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

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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