PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M7793/1-013Meter,time Totalizing

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6645-01-356-2271 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-01-356-2271 — this item is cataloged by the U.S. Government under National Stock Number 6645-01-356-2271. Primary manufacturer part number: M7793/1-013.
Features
  • Meter,time Totalizing — FSC 6645
  • Specification/standard Data: 81349-MIL-M-7793/1A GOVERNMENT SPECIFICATION A
  • Movement Type: ELECTRONIC
  • Hermetic Protection: PROVIDED
  • Reset Feature: NOT PROVIDED
  • Body Width: 0.500 INCHES NOMINAL IN
  • Body Length: 0.500 INCHES NOMINAL IN
  • Test Data Document: 81349-MIL-M-7793F SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Meter,time Totalizing, cataloged under National Stock Number 6645-01-356-2271, 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 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6645-01-356-2271
Primary Part NumberM7793/1-013
Item NameMeter,time Totalizing
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Specification/standard Data81349-MIL-M-7793/1A GOVERNMENT SPECIFICATION A
Movement TypeELECTRONIC
Hermetic ProtectionPROVIDED
Reset FeatureNOT PROVIDED
Body Width0.500 INCHES NOMINAL IN
Body Length0.500 INCHES NOMINAL IN
Test Data Document81349-MIL-M-7793F SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Mounting Flange Width0.870 INCHES NOMINAL IN
Mounting TypeFLANGE
Body Depth1.047 INCHES MINIMUM AND 1.094 INCHES MAXIMUM IN
Unit TypeMOUNTED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6645-01-208-1731 INTERCHANGEABLE
Meter,time Totalizing
6645-01-265-8708 INTERCHANGEABLE
Meter,time Totalizing
6645-01-550-4586 INTERCHANGEABLE
Meter,time Totalizing
Cross-Reference Index
Part NumberManufacturer
M7793/1-013 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-M-7793/1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6645-01-208-1731INTERCHANGEABLE
METER,TIME TOTALIZING
6645-01-265-8708INTERCHANGEABLE
METER,TIME TOTALIZING
6645-01-550-4586INTERCHANGEABLE
METER,TIME TOTALIZING

Frequently Asked Questions

What is NSN 6645-01-356-2271?

NSN 6645-01-356-2271 is a Meter,time Totalizing, 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: active.

What are the part numbers for NSN 6645-01-356-2271?

NSN 6645-01-356-2271 has 2 cross-referenced part numbers: M7793/1-013 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-M-7793/1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6645-01-356-2271?

There are 3 known substitutes for 6645-01-356-2271: 6645-01-208-1731, 6645-01-265-8708, 6645-01-550-4586. Verify interchangeability with system specifications before substitution.

What are the specifications of M7793/1-013?

Key specifications for M7793/1-013: Specification/standard Data: 81349-MIL-M-7793/1A GOVERNMENT SPECIFICATION A; Movement Type: ELECTRONIC; Hermetic Protection: PROVIDED; Reset Feature: NOT PROVIDED. 11 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com