PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S6800Meter,time Totalizing

H20 Tank Inc U S Motors Div · NSN 6645-00-276-7544 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-276-7544 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-276-7544. Primary manufacturer part number: S6800.
Features
  • Meter,time Totalizing — FSC 6645
  • Measurement Unit: HOURS
  • Mounting Flange Diameter: 2.875 INCHES NOMINAL IN
  • Movement Type: ELECTRICAL
  • Mounting Method: FLUSH
  • Mounting Type: PANEL
  • Unit Type: MOUNTED
  • Current Type: DC
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Meter,time Totalizing, cataloged under National Stock Number 6645-00-276-7544, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is H20 Tank Inc U S Motors Div. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). 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
NSN6645-00-276-7544
Primary Part NumberS6800
Item NameMeter,time Totalizing
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerH20 Tank Inc U S Motors Div
StatusACTIVE
Measurement UnitHOURS
Mounting Flange Diameter2.875 INCHES NOMINAL IN
Movement TypeELECTRICAL
Mounting MethodFLUSH
Mounting TypePANEL
Unit TypeMOUNTED
Current TypeDC
Terminal Quantity2
Maximum Measurement9999.00
Background ColorWHITE
Smallest Increment Indicated1.00
Indicator TypeDRUM REGISTER
Reset FeatureNOT PROVIDED
Body Depth1.875 INCHES NOMINAL IN
Electrical Movement TypeMAGNETIC
Marking ColorBLACK NUMERALS
Voltage Rating6.0 VOLTS NOMINAL
Body Diameter2.100 INCHES NOMINAL IN
Terminal TypeWIRE LEAD
Mounting ConfigurationTHREE 0.141 IN. DIA MTG HOLES ON 1.266 IN. SPACED 120 DEG APART IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5120-00-595-9552 INTERCHANGEABLE
Pliers,retaining Ring
5962-01-112-1020503243-1 INTERCHANGEABLE
Microcircuit,digital
L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products
Cross-Reference Index
Part NumberManufacturer
S6800 PRIMARY H20 Tank Inc U S Motors Div (USA)
MI568 Hobbs Corp (USA)
Related Parts
5120-00-595-9552INTERCHANGEABLE
PLIERS,RETAINING RING
5962-01-112-1020INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
503243-1

Frequently Asked Questions

What is NSN 6645-00-276-7544?

NSN 6645-00-276-7544 is a Meter,time Totalizing, manufactured by H20 Tank Inc U S Motors Div, classified under FSC 6645 (No Item Name Available). Status: active.

What are the part numbers for NSN 6645-00-276-7544?

NSN 6645-00-276-7544 has 2 cross-referenced part numbers: S6800 (H20 Tank Inc U S Motors Div), MI568 (Hobbs Corp).

What NSN replaces 6645-00-276-7544?

There are 2 known substitutes for 6645-00-276-7544: 5120-00-595-9552, 5962-01-112-1020. Verify interchangeability with system specifications before substitution.

What are the specifications of S6800?

Key specifications for S6800: Measurement Unit: HOURS; Mounting Flange Diameter: 2.875 INCHES NOMINAL IN; Movement Type: ELECTRICAL; Mounting Method: FLUSH. 20 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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