PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FARADJewel,third and Fou

Waltham Clock Co Inc · NSN 6645-00-719-9143 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-719-9143 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-719-9143. Primary manufacturer part number: FARAD.
Features
  • Jewel,third and Fou — FSC 6645
  • 3 verified cross-references
  • Primary manufacturer: Waltham Clock Co Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Jewel,third and Fou, cataloged under National Stock Number 6645-00-719-9143, 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 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameJewel,third and Fou
FSC / FSG6645 — No Item Name Available (FSG 66)
ManufacturersWaltham Clock Co Inc (CAGE 79300); Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (CAGE 19200)
Technical Specifications
ParameterValue
NSN6645-00-719-9143
Primary Part NumberFARAD
Item NameJewel,third and Fou
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerWaltham Clock Co Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3110-00-100-07903776 INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
3130-00-186-504319A104 INTERCHANGEABLE
Bearing Unit,ball
Reliance Electric Company Dba Reliance & Dodge Brands
3040-00-218-4274J34 INTERCHANGEABLE
Shaft,shouldered
Circor Naval Solutions Llc Dba Warren Pumps
5340-01-059-0657 INTERCHANGEABLE
Shield,expansion
5945-01-662-263943-060-125 INTERCHANGEABLE
Relay,hybrid
Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil
Cross-Reference Index
Part NumberManufacturer
FARAD Waltham Clock Co Inc (USA)
7199143 Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA)
J34 Waltham Clock Co Inc (USA)
Related Parts
3110-00-100-0790INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
3776
3130-00-186-5043INTERCHANGEABLE
BEARING UNIT,BALL
19A104
3040-00-218-4274INTERCHANGEABLE
SHAFT,SHOULDERED
J34
5340-01-059-0657INTERCHANGEABLE
SHIELD,EXPANSION
5945-01-662-2639INTERCHANGEABLE
RELAY,HYBRID
43-060-125

Frequently Asked Questions

What is NSN 6645-00-719-9143?

NSN 6645-00-719-9143 is a Jewel,third and Fou, manufactured by Waltham Clock Co Inc, classified under FSC 6645 (No Item Name Available). Status: active.

What are the part numbers for NSN 6645-00-719-9143?

NSN 6645-00-719-9143 has 3 cross-referenced part numbers: FARAD (Waltham Clock Co Inc), 7199143 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate), J34 (Waltham Clock Co Inc).

What NSN replaces 6645-00-719-9143?

There are 5 known substitutes for 6645-00-719-9143: 3110-00-100-0790, 3130-00-186-5043, 3040-00-218-4274 and 2 more. Verify interchangeability with system specifications before substitution.

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