PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILC1194Clock,marine,mechanical

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6645-00-224-8631 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-224-8631 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-224-8631. Primary manufacturer part number: MILC1194.
Features
  • Clock,marine,mechanical — FSC 6645
  • Maximum Running Time: 8.0 DAYS
  • Bezel Type: HINGED
  • Nonmagnetic Characteristic: NOT INCLUDED
  • Dial Outside Diameter: 6.000 INCHES IN
  • Second Hand Type: SWEEP
  • Civil Date Indicator: NOT INCLUDED
  • Plastic Case Color: BLACK
Applications
  • Applications requiring Plastic Case construction
General Description

The Clock,marine,mechanical, cataloged under National Stock Number 6645-00-224-8631, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6645-00-224-8631
Primary Part NumberMILC1194
Item NameClock,marine,mechanical
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Maximum Running Time8.0 DAYS
Bezel TypeHINGED
Nonmagnetic CharacteristicNOT INCLUDED
Dial Outside Diameter6.000 INCHES IN
Second Hand TypeSWEEP
Civil Date IndicatorNOT INCLUDED
Plastic Case ColorBLACK
Jewel Quantity11
Striking MechanismNOT INCLUDED
Winding Device LocationFACE
Luminous DialNOT INCLUDED
Special MarkingsU. S. GOVERNMENT MARKED ON DIAL
MaterialPLASTIC CASE
Second Hand ColorRED, LUSTERLESS
ColorBLACK BACKGROUND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
6645-00-224-8629 INTERCHANGEABLE
Clock,marine,mechanical
6645-00-224-8632 INTERCHANGEABLE
Clock,marine,mechanical
5342-00-679-76159025992 INTERCHANGEABLE
Piston,dashpot
Us Army Aviation and Missile Command
6645-01-229-249740063PH INTERCHANGEABLE
Clock,marine,mechanical
The Chelsea Clock Llc
Cross-Reference Index
Part NumberManufacturer
MILC1194 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
902599-2 Raytheon Company Dba Raytheon (USA)
TYPEBSIZE6INCH Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
20418-PH Raytheon Company Dba Raytheon (USA)
P-643 The Chelsea Clock Llc (USA)
Related Parts
6645-00-224-8629INTERCHANGEABLE
CLOCK,MARINE,MECHANICAL
6645-00-224-8632INTERCHANGEABLE
CLOCK,MARINE,MECHANICAL
5342-00-679-7615INTERCHANGEABLE
PISTON,DASHPOT
9025992
6645-01-229-2497INTERCHANGEABLE
CLOCK,MARINE,MECHANICAL
40063PH

Frequently Asked Questions

What is NSN 6645-00-224-8631?

NSN 6645-00-224-8631 is a Clock,marine,mechanical, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 6645 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6645-00-224-8631?

NSN 6645-00-224-8631 has 5 cross-referenced part numbers: MILC1194 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 902599-2 (Raytheon Company Dba Raytheon), TYPEBSIZE6INCH (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 20418-PH (Raytheon Company Dba Raytheon), P-643 (The Chelsea Clock Llc).

What NSN replaces 6645-00-224-8631?

There are 4 known substitutes for 6645-00-224-8631: 6645-00-224-8629, 6645-00-224-8632, 5342-00-679-7615 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILC1194?

Key specifications for MILC1194: Maximum Running Time: 8.0 DAYS; Bezel Type: HINGED; Nonmagnetic Characteristic: NOT INCLUDED; Dial Outside Diameter: 6.000 INCHES IN. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6645-00-224-8631 still in active supply?

NSN 6645-00-224-8631 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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