PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

400202Clock,panel

Waltham Aircraft Clock Corp · NSN 6645-00-150-6526 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-150-6526 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-150-6526. Primary manufacturer part number: 400202.
Features
  • Clock,panel — FSC 6645
  • Outside Diameter: 1.875 INCHES NOMINAL IN
  • Dial Quantity: 1
  • Surface Treatment Document and Classification: FN-10, NORTH AMERICAN PHILIPS CONTROLS CORP MFR REF SINGLE TREATMENT RESPONSE CASE
  • Second Hand Color: BLACK, LUSTERLESS
  • Material: ALUMINUM CASE
  • Maximum Running Time: 8.0 DAYS
  • Increment in Hours: 12.000
Applications
  • Applications requiring Aluminum Case construction
General Description

The Clock,panel, cataloged under National Stock Number 6645-00-150-6526, 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 Aircraft Clock Corp. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6645-00-150-6526
Primary Part Number400202
Item NameClock,panel
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerWaltham Aircraft Clock Corp
StatusACTIVE
Outside Diameter1.875 INCHES NOMINAL IN
Dial Quantity1
Surface Treatment Document and ClassificationFN-10, NORTH AMERICAN PHILIPS CONTROLS CORP MFR REF SINGLE TREATMENT RESPONSE CASE
Second Hand ColorBLACK, LUSTERLESS
MaterialALUMINUM CASE
Maximum Running Time8.0 DAYS
Increment in Hours12.000
Second Hand TypeSWEEP
Mechanical Movement TypeSPRING WOUND
Chime MechanismNOT INCLUDED
Surface TreatmentPAINT LUSTERLESS CASE
Movement TypeMECHANICAL
Nondefinitive Spec/std DataA13A2 TYPE
Escapement TypeLEVER
Winding Device LocationFACE
Nonmagnetic CharacteristicINCLUDED
Specification/standard Data81349-MIL-C-6499 GOVERNMENT SPECIFICATION
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
6645-00-084-1424 INTERCHANGEABLE
Clock,panel
6645-00-880-5927400252 INTERCHANGEABLE
Clock,panel
Waltham Aircraft Clock Corp
6645-00-950-8599 INTERCHANGEABLE
Clock,panel
1560-01-038-825966-1032-8 INTERCHANGEABLE
Pulley Bracket,aile
The Boeing Company Div Defense
6645-01-235-9465 INTERCHANGEABLE
Clock,panel
6645-01-383-7231A13A2 INTERCHANGEABLE
Clock,panel
Wakmann Watch Company Inc
5998-01-387-3487400-202 INTERCHANGEABLE
Circuit Card Assembly
Intelligent Platforms, Llc
6140-01-609-88360400202 INTERCHANGEABLE
Battery,storage
Jlg Industries, Inc.
6645-01-633-0303A-13A-2 INTERCHANGEABLE
Clock Paner
Waltham Aircraft Clock Corp
Cross-Reference Index
Part NumberManufacturer
MILC6499E Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
400202 PRIMARY Waltham Aircraft Clock Corp (USA)
6645PL0222285 Jednolity Indeks Materialowy - Uniform Material Index (POL)
6610328 Embraer Empresa Brasileira De Aeronautica Sa (BRA)
6610328 Embraer S.a. (BRA)
MILC6499 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILC6499C Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
A13A2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
400202 Waltham Clock Co Inc (USA)
6645PL1629742 Jednolity Indeks Materialowy - Uniform Material Index (POL)
Related Parts
6645-00-084-1424INTERCHANGEABLE
CLOCK,PANEL
6645-00-880-5927INTERCHANGEABLE
CLOCK,PANEL
400252
6645-00-950-8599INTERCHANGEABLE
CLOCK,PANEL
1560-01-038-8259INTERCHANGEABLE
PULLEY BRACKET,AILE
66-1032-8
6645-01-235-9465INTERCHANGEABLE
CLOCK,PANEL
6645-01-383-7231INTERCHANGEABLE
CLOCK,PANEL
A13A2
5998-01-387-3487INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
400-202
6140-01-609-8836INTERCHANGEABLE
BATTERY,STORAGE
0400202
6645-01-633-0303INTERCHANGEABLE
CLOCK PANER
A-13A-2

Frequently Asked Questions

What is NSN 6645-00-150-6526?

NSN 6645-00-150-6526 is a Clock,panel, manufactured by Waltham Aircraft Clock Corp, classified under FSC 6645 (No Item Name Available). Status: active.

What are the part numbers for NSN 6645-00-150-6526?

NSN 6645-00-150-6526 has 10 cross-referenced part numbers: MILC6499E (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 400202 (Waltham Aircraft Clock Corp), 6645PL0222285 (Jednolity Indeks Materialowy - Uniform Material Index), 6610328 (Embraer Empresa Brasileira De Aeronautica Sa), 6610328 (Embraer S.a.) and 5 more.

What NSN replaces 6645-00-150-6526?

There are 9 known substitutes for 6645-00-150-6526: 6645-00-084-1424, 6645-00-880-5927, 6645-00-950-8599 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 400202?

Key specifications for 400202: Outside Diameter: 1.875 INCHES NOMINAL IN; Overall Depth: 1.890 INCHES NOMINAL IN; Dial Quantity: 1; Surface Treatment Document and Classification: FN-10, NORTH AMERICAN PHILIPS CONTROLS CORP MFR REF SINGLE TREATMENT RESPONSE CASE. 19 total characteristics are documented in the Federal Logistics Information System.

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