PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

22020Barrel

Waltham Clock Co Inc · NSN 6645-00-544-8527 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-544-8527 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-544-8527. Primary manufacturer part number: 22020.
Features
  • Barrel — 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 Barrel, cataloged under National Stock Number 6645-00-544-8527, 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameBarrel
FSC / FSG6645 — No Item Name Available (FSG 66)
ManufacturersWaltham Clock Co Inc (CAGE 79300)
Technical Specifications
ParameterValue
NSN6645-00-544-8527
Primary Part Number22020
Item NameBarrel
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerWaltham Clock Co Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6625-00-003-097110880 INTERCHANGEABLE
Frequency Meter Matched Set
Creating Technology Solutions, Llc Dba Technology Research Corp Div Technology Research Corp
4730-00-388-9910 INTERCHANGEABLE
Plug,tube Repair
6125-00-769-563522020 INTERCHANGEABLE
Parts Kit,contact S
Hyundai Ideal Electric Co.
4720-01-170-706732850AX INTERCHANGEABLE
Hose,air Duct
Oshkosh Defense Llc
4720-01-285-8563 INTERCHANGEABLE
Hose,air Duct
7530-01-288-4696 INTERCHANGEABLE
Paper,graph
6230-01-303-743522020 INTERCHANGEABLE
Spotlight
Grimes Aerospace Company
5330-01-321-597522020 INTERCHANGEABLE
Gasket
Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
3010-01-431-562022020 INTERCHANGEABLE
Universal Joint,nonvehicular
B.w. Elliott Manufacturing Co., Llc
6515-01-563-528422020 INTERCHANGEABLE
Protector,luer Lock Injector
Carmel Pharma, Inc.
Cross-Reference Index
Part NumberManufacturer
22020 Waltham Clock Co Inc (USA)
Related Parts
6625-00-003-0971INTERCHANGEABLE
FREQUENCY METER MATCHED SET
10880
4730-00-388-9910INTERCHANGEABLE
PLUG,TUBE REPAIR
6125-00-769-5635INTERCHANGEABLE
PARTS KIT,CONTACT S
22020
4720-01-170-7067INTERCHANGEABLE
HOSE,AIR DUCT
32850AX
4720-01-285-8563INTERCHANGEABLE
HOSE,AIR DUCT
7530-01-288-4696INTERCHANGEABLE
PAPER,GRAPH
6230-01-303-7435INTERCHANGEABLE
SPOTLIGHT
22020
5330-01-321-5975INTERCHANGEABLE
GASKET
22020
3010-01-431-5620INTERCHANGEABLE
UNIVERSAL JOINT,NONVEHICULAR
22020
6515-01-563-5284INTERCHANGEABLE
PROTECTOR,LUER LOCK INJECTOR
22020
5965-01-604-6585INTERCHANGEABLE
LOUDSPEAKER ASSEMBLY
22020
5940-01-617-7940INTERCHANGEABLE
FERRULE,ELECTRICAL CONDUCTOR
2202.0.

Frequently Asked Questions

What is NSN 6645-00-544-8527?

NSN 6645-00-544-8527 is a Barrel, manufactured by Waltham Clock Co Inc, classified under FSC 6645 (No Item Name Available). Status: active.

What are the part numbers for NSN 6645-00-544-8527?

NSN 6645-00-544-8527 has 1 cross-referenced part number: 22020 (Waltham Clock Co Inc).

What NSN replaces 6645-00-544-8527?

There are 12 known substitutes for 6645-00-544-8527: 6625-00-003-0971, 4730-00-388-9910, 6125-00-769-5635 and 9 more. Verify interchangeability with system specifications before substitution.

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