PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25-505444-1Clock,panel

General Dynamics Mission Systems, Inc. · NSN 6645-00-403-4947 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-403-4947 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-403-4947. Primary manufacturer part number: 25-505444-1.
Features
  • Clock,panel — FSC 6645
  • 2 verified cross-references
  • Primary manufacturer: General Dynamics Mission Systems, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Clock,panel, cataloged under National Stock Number 6645-00-403-4947, 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 Dynamics Mission Systems, Inc.. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6645-00-403-4947
Primary Part Number25-505444-1
Item NameClock,panel
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerGeneral Dynamics Mission Systems, Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4310-01-005-706560020 INTERCHANGEABLE
Vane,vacuum Pump
Ace Pump Corp
5962-01-346-4948 INTERCHANGEABLE
Microcircuit,linear
Cross-Reference Index
Part NumberManufacturer
A13A Midway Aircraft Instrument Corportion (USA)
25-505444-1 PRIMARY General Dynamics Mission Systems, Inc. (USA)
Related Parts
4310-01-005-7065INTERCHANGEABLE
VANE,VACUUM PUMP
60020
5962-01-346-4948INTERCHANGEABLE
MICROCIRCUIT,LINEAR

Frequently Asked Questions

What is NSN 6645-00-403-4947?

NSN 6645-00-403-4947 is a Clock,panel, manufactured by General Dynamics Mission Systems, Inc., classified under FSC 6645 (No Item Name Available). Status: active.

What are the part numbers for NSN 6645-00-403-4947?

NSN 6645-00-403-4947 has 2 cross-referenced part numbers: A13A (Midway Aircraft Instrument Corportion), 25-505444-1 (General Dynamics Mission Systems, Inc.).

What NSN replaces 6645-00-403-4947?

There are 2 known substitutes for 6645-00-403-4947: 4310-01-005-7065, 5962-01-346-4948. Verify interchangeability with system specifications before substitution.

What are the specifications of 25-505444-1?

Key specifications for 25-505444-1: Overall Width: 2.375 INCHES NOMINAL IN; Overall Height: 2.375 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: CLOCK,AIRCRAFT,MECHANICAL; Special Features: REMOTE CONTROL UNIT INCLUDED. 4 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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