PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

28578Wheel

Waltham Clock Co Inc · NSN 6645-00-049-6713 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-049-6713 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-049-6713. Primary manufacturer part number: 28578.
Features
  • Wheel — FSC 6645
  • 1 verified cross-reference
  • Primary manufacturer: Waltham Clock Co Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Wheel, cataloged under National Stock Number 6645-00-049-6713, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Waltham Clock Co Inc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameWheel
FSC / FSG6645 — No Item Name Available (FSG 66)
ManufacturersWaltham Clock Co Inc (CAGE 79300)
Technical Specifications
ParameterValue
NSN6645-00-049-6713
Primary Part Number28578
Item NameWheel
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerWaltham Clock Co Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5950-00-754-5942677-6116-000 INTERCHANGEABLE
Transformer,audio Frequency
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5905-01-085-96432857 INTERCHANGEABLE
Resistor,fixed,wire Wound
Crown Audio, Inc. Dba Crown International
Cross-Reference Index
Part NumberManufacturer
28578 Waltham Clock Co Inc (USA)
Related Parts
5950-00-754-5942INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
677-6116-000
5905-01-085-9643INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
2857

Frequently Asked Questions

What is NSN 6645-00-049-6713?

NSN 6645-00-049-6713 is a Wheel, manufactured by Waltham Clock Co Inc, classified under FSC 6645 (No Item Name Available). Status: active.

What are the part numbers for NSN 6645-00-049-6713?

NSN 6645-00-049-6713 has 1 cross-referenced part number: 28578 (Waltham Clock Co Inc).

What NSN replaces 6645-00-049-6713?

There are 2 known substitutes for 6645-00-049-6713: 5950-00-754-5942, 5905-01-085-9643. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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