PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

EHU15AAIndicator,temperature,thermocoup

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6685-00-945-4979 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-945-4979 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-945-4979. Primary manufacturer part number: EHU15AA.
Features
  • Indicator,temperature,thermocoup — FSC 6685
  • AC Voltage Rating: 115.0 VOLTS NOMINAL
  • Frequency Rating: 400.0 HERTZ NOMINAL
  • Scale Range: +0.1 TO 1200.0 DEG CELSIUS ALL INDICATORS ALL SCALES
  • Phase: SINGLE
  • Pointer Purpose: CURRENT TEMPERATURE
  • Individual Marking: TEMP DEG C X 100
  • Electrical Connection Quantity: 1
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Indicator,temperature,thermocoup, cataloged under National Stock Number 6685-00-945-4979, is classified within Federal Supply Class 6685 (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 13 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-945-4979
Primary Part NumberEHU15AA
Item NameIndicator,temperature,thermocoup
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
AC Voltage Rating115.0 VOLTS NOMINAL
Frequency Rating400.0 HERTZ NOMINAL
Scale Range+0.1 TO 1200.0 DEG CELSIUS ALL INDICATORS ALL SCALES
PhaseSINGLE
Pointer PurposeCURRENT TEMPERATURE
Individual MarkingTEMP DEG C X 100
Electrical Connection Quantity1
Electrical Connection Identifying NumberMS33678C-18-9P
Presentation TypeDIAL
Diameter2.000 INCHES NOMINAL IN
Pointer TypeINDICATING ALL POINTERS
Current TypeAC
Length6.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
6685-00-061-6255502BL10 INTERCHANGEABLE
Indicator,temperature,thermocoup
Horizon Aerospace Llc Dba Magnetics Division
6685-00-066-4581DST29-2 INTERCHANGEABLE
Indicator,temperature,thermocoup
Mission Systems Davenport Inc.
6685-00-148-82479A375 INTERCHANGEABLE
Indicator,temperature,thermocoup
Transicoil Llc Dba Ads Transicoil Div Transicoil
6685-00-897-84008DJ100WAA2 INTERCHANGEABLE
Indicator,temperature,thermocoup
Ametek Inc Div Aerospace and Defense
6685-00-900-2651102576 INTERCHANGEABLE
Indicator,temperature,thermocoup
Astronautics Corporation of America
6685-00-933-7911DST29-3 INTERCHANGEABLE
Indicator,temperature,thermocoup
Mission Systems Davenport Inc.
6685-00-937-4039502BL10A INTERCHANGEABLE
Indicator,temperature,thermocoup
Horizon Aerospace Llc Dba Magnetics Division
Cross-Reference Index
Part NumberManufacturer
EHU15AA Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILI27552 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6685-00-061-6255INTERCHANGEABLE
INDICATOR,TEMPERATURE,THERMOCOUP
502BL10
6685-00-066-4581INTERCHANGEABLE
INDICATOR,TEMPERATURE,THERMOCOUP
DST29-2
6685-00-148-8247INTERCHANGEABLE
INDICATOR,TEMPERATURE,THERMOCOUP
9A375
6685-00-897-8400INTERCHANGEABLE
INDICATOR,TEMPERATURE,THERMOCOUP
8DJ100WAA2
6685-00-900-2651INTERCHANGEABLE
INDICATOR,TEMPERATURE,THERMOCOUP
102576
6685-00-933-7911INTERCHANGEABLE
INDICATOR,TEMPERATURE,THERMOCOUP
DST29-3
6685-00-937-4039INTERCHANGEABLE
INDICATOR,TEMPERATURE,THERMOCOUP
502BL10A

Frequently Asked Questions

What is NSN 6685-00-945-4979?

NSN 6685-00-945-4979 is a Indicator,temperature,thermocoup, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-945-4979?

NSN 6685-00-945-4979 has 2 cross-referenced part numbers: EHU15AA (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILI27552 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6685-00-945-4979?

There are 7 known substitutes for 6685-00-945-4979: 6685-00-061-6255, 6685-00-066-4581, 6685-00-148-8247 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of EHU15AA?

Key specifications for EHU15AA: AC Voltage Rating: 115.0 VOLTS NOMINAL; Special Features: CASE MATERIAL NON-FERROUS AND PER MS33639; LIGHTING PER MIL-L-27160; INDICATOR INCLUDES A POWER-OFF WARNING; CHROMEL-ALUMEL THERMOCOUPLE; Frequency Rating: 400.0 HERTZ NOMINAL; Scale Range: +0.1 TO 1200.0 DEG CELSIUS ALL INDICATORS ALL SCALES. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-945-4979 still in active supply?

NSN 6685-00-945-4979 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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