PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6645000664279Watch,wrist

General Services Administration Federal Supply Service · NSN 6645-00-066-4279 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-066-4279 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-066-4279. Primary manufacturer part number: 6645000664279.
Features
  • Watch,wrist — FSC 6645
  • Scale Quantity: 2
  • Graduation Unit: 1.000 SECOND OR 1.000 HOUR
  • Waterproof Feature: INCLUDED
  • Scale Range: +0.0 TO 12.0 HOUR AND +13.0 TO 24.0 HOUR
  • Inscription Color: WHITE
  • Hand Quantity: 3
  • Hand Color: GREEN AND WHITE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Watch,wrist, cataloged under National Stock Number 6645-00-066-4279, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is General Services Administration Federal Supply Service. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 18 commercial cross-references from 11 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6645-00-066-4279
Primary Part Number6645000664279
Item NameWatch,wrist
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerGeneral Services Administration Federal Supply Service
StatusCANCELLED
Scale Quantity2
Graduation Unit1.000 SECOND OR 1.000 HOUR
Waterproof FeatureINCLUDED
Scale Range+0.0 TO 12.0 HOUR AND +13.0 TO 24.0 HOUR
Inscription ColorWHITE
Hand Quantity3
Hand ColorGREEN AND WHITE
Second Setting FeatureINCLUDED
Luminous HandINCLUDED
Hand TypeSWEEP
Luminous NumeralINCLUDED
Major Graduation ColorGREEN
Hand DesignationSECOND TOTALIZING HAND AND MINUTE TOTALIZING HAND AND HOUR TOTALIZING HAND
Minor Graduation ColorWHITE
Scale NameSTANDARD TIME AND SUPPLEMENTAL MILITARY TIME
Stem CapPROVIDED
Stopwatch FeatureNOT INCLUDED
Nondefinitive Spec/std Data1 TYPE AND 4 CLASS
ColorBLACK, LUSTERLESS BACKGROUND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5342-00-042-88416002-105 INTERCHANGEABLE
Lever Manual Control
Raytheon Company Div Rmd Strategic
2810-00-118-283839986 INTERCHANGEABLE
Deflector Assembly,
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
6145-00-194-9829 INTERCHANGEABLE
Braid,wire
5120-00-221-114817-2 INTERCHANGEABLE
Punch and Die,grommet Inserting
Wilson Corporation, Inc. Dba Hollingsworth Mfg. Co. Div Hollingsworth Mfg.
5325-00-281-65932172 INTERCHANGEABLE
Grommet,nonmetallic
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
5305-00-286-2740 INTERCHANGEABLE
Screw,machine
5360-00-343-6972 INTERCHANGEABLE
Spring,helical,compression
4730-00-491-1013 INTERCHANGEABLE
Nipple,pipe
5935-00-819-54854139-0001 INTERCHANGEABLE
Cover,electrical Connector
Sv Microwave, Inc. Div Sv Microwave
6655-01-075-83152172 INTERCHANGEABLE
Corer,piston
Teledyne Instruments, Inc. Dba Teledyne Benthos
Cross-Reference Index
Part NumberManufacturer
SANDY 490 Stocker and Yale Inc (USA)
10616CS12-24 Waltham Clock Co Inc (USA)
2104 Elgin National Industries Inc (USA)
10BNCH Power Control Devices Inc (USA)
6645000664279 PRIMARY General Services Administration Federal Supply Service (USA)
39986 Hamilton Watch Co Inc (USA)
GG-W-113 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
2172 Elgin National Industries Inc (USA)
MIL-PRF-46374 TY1CL4 General Services Administration Federal Supply Service (USA)
MIL-PRF-46374 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
A11 Elgin National Industries Inc (USA)
10AKCSH Power Control Devices Inc (USA)
WW194003 Marathon Watch Company Ltd (CAN)
DTU2P Wells-Benrus Co (USA)
GY1L2X3075 Wells-Benrus Co (USA)
MIL-PRF-46374 TY2CL4 General Services Administration Federal Supply Service (USA)
WATCH,WRIST (SEE INDIVIDUAL MFR- Dla Aviation Engineering Div Department of Defense (USA)
DR2F2HACK Wells-Benrus Co (USA)
Related Parts
5342-00-042-8841INTERCHANGEABLE
LEVER MANUAL CONTROL
6002-105
2810-00-118-2838INTERCHANGEABLE
DEFLECTOR ASSEMBLY,
39986
6145-00-194-9829INTERCHANGEABLE
BRAID,WIRE
5120-00-221-1148INTERCHANGEABLE
PUNCH AND DIE,GROMMET INSERTING
17-2
5325-00-281-6593INTERCHANGEABLE
GROMMET,NONMETALLIC
2172
5305-00-286-2740INTERCHANGEABLE
SCREW,MACHINE
5360-00-343-6972INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
4730-00-491-1013INTERCHANGEABLE
NIPPLE,PIPE
5935-00-819-5485INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
4139-0001
6655-01-075-8315INTERCHANGEABLE
CORER,PISTON
2172
5331-01-101-1726INTERCHANGEABLE
O-RING
6515-01-227-9600INTERCHANGEABLE
BAG,OSTOMY
2172

Frequently Asked Questions

What is NSN 6645-00-066-4279?

NSN 6645-00-066-4279 is a Watch,wrist, manufactured by General Services Administration Federal Supply Service, classified under FSC 6645 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6645-00-066-4279?

NSN 6645-00-066-4279 has 18 cross-referenced part numbers: SANDY 490 (Stocker and Yale Inc), 10616CS12-24 (Waltham Clock Co Inc), 2104 (Elgin National Industries Inc), 10BNCH (Power Control Devices Inc), 6645000664279 (General Services Administration Federal Supply Service) and 13 more.

What NSN replaces 6645-00-066-4279?

There are 12 known substitutes for 6645-00-066-4279: 5342-00-042-8841, 2810-00-118-2838, 6145-00-194-9829 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6645000664279?

Key specifications for 6645000664279: Scale Quantity: 2; Graduation Unit: 1.000 SECOND OR 1.000 HOUR; Waterproof Feature: INCLUDED; Scale Range: +0.0 TO 12.0 HOUR AND +13.0 TO 24.0 HOUR. 21 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6645-00-066-4279 still in active supply?

NSN 6645-00-066-4279 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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