PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1781Clock,panel

Elgin National Industries Inc · NSN 6645-00-515-4348 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-515-4348 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-515-4348. Primary manufacturer part number: 1781.
Features
  • Clock,panel — FSC 6645
  • 2 verified cross-references
  • Primary manufacturer: Elgin National Industries Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Clock,panel, cataloged under National Stock Number 6645-00-515-4348, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Elgin National Industries Inc. This item has 2 commercial cross-references from 2 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
NSN6645-00-515-4348
Primary Part Number1781
Item NameClock,panel
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerElgin National Industries Inc
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4820-00-036-04491781 INTERCHANGEABLE
Diaphragm,valve,flat
Imi Cash Valve Inc
5945-00-194-1526CD1A INTERCHANGEABLE
Relay,electromagnetic
Leach International Corp Div Leach International Corporation
5940-00-202-023717-2 INTERCHANGEABLE
Terminal Board
Cinch Connectivity Solutions Inc.
5120-00-293-0032 INTERCHANGEABLE
Pliers
3120-00-324-86581781 INTERCHANGEABLE
Bearing,sleeve
Thermo Electron Corporation Dba Iec Centrifuge Div Laboratory Equipment Divsion
5940-00-636-60251382B INTERCHANGEABLE
Terminal Board
Birnbach Co Inc
6685-00-641-6126 INTERCHANGEABLE
Indicator,humidity,plug
4820-01-074-23973317508PC16 INTERCHANGEABLE
Stem,fluid Valve
Naval Sea Systems Command
4820-01-257-13951781 INTERCHANGEABLE
Rest,float,valve
Robert H Wager Co Inc
6640-01-302-26581781 INTERCHANGEABLE
Bearing,upper,centrifuge
Becton Dickinson and Co Primary Care Diagnostics Div
Cross-Reference Index
Part NumberManufacturer
1781 Elgin National Industries Inc (USA)
CD1A Waltham Clock Co Inc (USA)
Related Parts
4820-00-036-0449INTERCHANGEABLE
DIAPHRAGM,VALVE,FLAT
1781
5945-00-194-1526INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
CD1A
5940-00-202-0237INTERCHANGEABLE
TERMINAL BOARD
17-2
5120-00-293-0032INTERCHANGEABLE
PLIERS
3120-00-324-8658INTERCHANGEABLE
BEARING,SLEEVE
1781
5940-00-636-6025INTERCHANGEABLE
TERMINAL BOARD
1382B
6685-00-641-6126INTERCHANGEABLE
INDICATOR,HUMIDITY,PLUG
4820-01-074-2397INTERCHANGEABLE
STEM,FLUID VALVE
3317508PC16
4820-01-257-1395INTERCHANGEABLE
REST,FLOAT,VALVE
1781
6640-01-302-2658INTERCHANGEABLE
BEARING,UPPER,CENTRIFUGE
1781
6740-01-382-8549INTERCHANGEABLE
ADAPTER,PHOTOGRAPHIC
5955-01-428-6571INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
CD1A

Frequently Asked Questions

What is NSN 6645-00-515-4348?

NSN 6645-00-515-4348 is a Clock,panel, manufactured by Elgin National Industries Inc, classified under FSC 6645 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6645-00-515-4348?

NSN 6645-00-515-4348 has 2 cross-referenced part numbers: 1781 (Elgin National Industries Inc), CD1A (Waltham Clock Co Inc).

What NSN replaces 6645-00-515-4348?

There are 12 known substitutes for 6645-00-515-4348: 4820-00-036-0449, 5945-00-194-1526, 5940-00-202-0237 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1781?

Key specifications for 1781: Special Features: EQUIPPED W/LONG KNOB; Overall Width: 3.250 INCHES NOMINAL IN. 2 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6645-00-515-4348 still in active supply?

NSN 6645-00-515-4348 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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