PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C-25Hour Totalizer

Essex Products Group, Inc. Dba Industrial Timer Company · NSN 6645-01-110-0776 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-01-110-0776 — this item is cataloged by the U.S. Government under National Stock Number 6645-01-110-0776. Primary manufacturer part number: C-25.
Features
  • Hour Totalizer — FSC 6645
  • 1 verified cross-reference
  • Primary manufacturer: Essex Products Group, Inc. Dba Industrial Timer Company
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Hour Totalizer, cataloged under National Stock Number 6645-01-110-0776, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Essex Products Group, Inc. Dba Industrial Timer Company. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameHour Totalizer
FSC / FSG6645 — No Item Name Available (FSG 66)
ManufacturersEssex Products Group, Inc. Dba Industrial Timer Company (CAGE 30703)
Technical Specifications
ParameterValue
NSN6645-01-110-0776
Primary Part NumberC-25
Item NameHour Totalizer
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerEssex Products Group, Inc. Dba Industrial Timer Company
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4730-00-007-4677C-25 INTERCHANGEABLE
Cap,quick Disconnect
Parker Hannifin Corporation Dba Quick Coupling Div Div Quick Coupling Division Bruning Operation
5130-00-134-7591C2-5 INTERCHANGEABLE
Chuck,fastener Installation Tool
Hi-Shear Corporation
2940-00-141-9026 INTERCHANGEABLE
Filter Element,fluid
5905-00-283-2650 INTERCHANGEABLE
Resistor,fixed,film
4410-00-383-7987 INTERCHANGEABLE
Cup,piston
5340-00-497-4586711698-132 INTERCHANGEABLE
Clamp,synchro
Raytheon Company Div Rmd Strategic
3455-00-551-3124 INTERCHANGEABLE
File,rotary
5930-00-552-8249 INTERCHANGEABLE
Switch,sensitive
5910-00-648-8805 INTERCHANGEABLE
Capacitor,fixed,electrolytic
3120-00-661-6664C25 INTERCHANGEABLE
Bearing,sleeve
Butterworth, Inc.
Cross-Reference Index
Part NumberManufacturer
C-25 PRIMARY Essex Products Group, Inc. Dba Industrial Timer Company (USA)
Related Parts
4730-00-007-4677INTERCHANGEABLE
CAP,QUICK DISCONNECT
C-25
5130-00-134-7591INTERCHANGEABLE
CHUCK,FASTENER INSTALLATION TOOL
C2-5
2940-00-141-9026INTERCHANGEABLE
FILTER ELEMENT,FLUID
5905-00-283-2650INTERCHANGEABLE
RESISTOR,FIXED,FILM
4410-00-383-7987INTERCHANGEABLE
CUP,PISTON
5340-00-497-4586INTERCHANGEABLE
CLAMP,SYNCHRO
711698-132
3455-00-551-3124INTERCHANGEABLE
FILE,ROTARY
5930-00-552-8249INTERCHANGEABLE
SWITCH,SENSITIVE
5910-00-648-8805INTERCHANGEABLE
CAPACITOR,FIXED,ELECTROLYTIC
3120-00-661-6664INTERCHANGEABLE
BEARING,SLEEVE
C25
5315-00-821-9776INTERCHANGEABLE
PIN,TAPERED,PLAIN
0404-018
6635-01-127-9830INTERCHANGEABLE
TEST BLOCK

Frequently Asked Questions

What is NSN 6645-01-110-0776?

NSN 6645-01-110-0776 is a Hour Totalizer, manufactured by Essex Products Group, Inc. Dba Industrial Timer Company, classified under FSC 6645 (No Item Name Available). Status: active.

What are the part numbers for NSN 6645-01-110-0776?

NSN 6645-01-110-0776 has 1 cross-referenced part number: C-25 (Essex Products Group, Inc. Dba Industrial Timer Company).

What NSN replaces 6645-01-110-0776?

There are 12 known substitutes for 6645-01-110-0776: 4730-00-007-4677, 5130-00-134-7591, 2940-00-141-9026 and 9 more. Verify interchangeability with system specifications before substitution.

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