PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SM-B-334788Thermocouple,heating Element

Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir · NSN 6685-00-290-5821 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-290-5821 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-290-5821. Primary manufacturer part number: SM-B-334788.
Features
  • Thermocouple,heating Element — FSC 6685
  • Terminal Type and Quantity: 2 CONNECTOR, COAXIAL
  • Material: BRASS METER CASE
  • Case Type: CYLINDRICAL
  • Overall Diameter: 0.875 INCHES NOMINAL IN
  • Mounting Location: OUTSIDE METER CASE
  • 9 verified cross-references
  • Primary manufacturer: Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
Applications
  • Applications requiring Brass Meter Case construction
General Description

The Thermocouple,heating Element, cataloged under National Stock Number 6685-00-290-5821, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 3 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
NSN6685-00-290-5821
Primary Part NumberSM-B-334788
Item NameThermocouple,heating Element
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerUs Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
StatusCANCELLED
Terminal Type and Quantity2 CONNECTOR, COAXIAL
MaterialBRASS METER CASE
Case TypeCYLINDRICAL
Overall Diameter0.875 INCHES NOMINAL IN
Mounting LocationOUTSIDE METER CASE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5905-00-107-7714211H-25MA-40A-50R00-K INTERCHANGEABLE
Resistor,adjustable
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
5930-00-167-1746BZ3YST INTERCHANGEABLE
Switch,sensitive
Honeywell International Inc. Dba Honeyweel Sensing & Controls
5325-00-276-4215 INTERCHANGEABLE
Grommet,nonmetallic
2930-00-374-18552092 INTERCHANGEABLE
Radiator,engine Coolant
Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
2540-00-594-7480 INTERCHANGEABLE
Seat,vehicular
4730-00-620-05412092 INTERCHANGEABLE
Parts Kit,steam Trap
Velan Valve Corp.
5325-00-640-99862092 INTERCHANGEABLE
Grommet,nonmetallic
Atlantic India Rubber Co Inc
5950-00-645-5337 INTERCHANGEABLE
Transformer,power
5999-00-690-9773 INTERCHANGEABLE
Heatsink
6135-00-754-8191 INTERCHANGEABLE
Battery,nonrechargeable
Cross-Reference Index
Part NumberManufacturer
3130-005 Bird Electronic Corporation Div Bird Electronic Corp (USA)
MX1783U Joint Electronics Type Designation System (USA)
MX207AP Joint Electronics Type Designation System (USA)
SM-B-334788 PRIMARY Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
A2092 Bird Electronic Corporation Div Bird Electronic Corp (USA)
2092 Bird Electronic Corporation Div Bird Electronic Corp (USA)
SC-DL-334853 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
900018-4 Bird Electronic Corporation Div Bird Electronic Corp (USA)
313001-4 Bird Electronic Corporation Div Bird Electronic Corp (USA)
Related Parts
5905-00-107-7714INTERCHANGEABLE
RESISTOR,ADJUSTABLE
211H-25MA-40A-50R00-K
5930-00-167-1746INTERCHANGEABLE
SWITCH,SENSITIVE
BZ3YST
5325-00-276-4215INTERCHANGEABLE
GROMMET,NONMETALLIC
2930-00-374-1855INTERCHANGEABLE
RADIATOR,ENGINE COOLANT
2092
2540-00-594-7480INTERCHANGEABLE
SEAT,VEHICULAR
4730-00-620-0541INTERCHANGEABLE
PARTS KIT,STEAM TRAP
2092
5325-00-640-9986INTERCHANGEABLE
GROMMET,NONMETALLIC
2092
5950-00-645-5337INTERCHANGEABLE
TRANSFORMER,POWER
5999-00-690-9773INTERCHANGEABLE
HEATSINK
6135-00-754-8191INTERCHANGEABLE
BATTERY,NONRECHARGEABLE
1560-00-859-7108INTERCHANGEABLE
WINDSHIELD PANEL,AIRCRAFT
3-13000-5
5365-01-012-3600INTERCHANGEABLE
SPACER,SLEEVE
20-92

Frequently Asked Questions

What is NSN 6685-00-290-5821?

NSN 6685-00-290-5821 is a Thermocouple,heating Element, manufactured by Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-290-5821?

NSN 6685-00-290-5821 has 9 cross-referenced part numbers: 3130-005 (Bird Electronic Corporation Div Bird Electronic Corp), MX1783U (Joint Electronics Type Designation System), MX207AP (Joint Electronics Type Designation System), SM-B-334788 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), A2092 (Bird Electronic Corporation Div Bird Electronic Corp) and 4 more.

What NSN replaces 6685-00-290-5821?

There are 12 known substitutes for 6685-00-290-5821: 5905-00-107-7714, 5930-00-167-1746, 5325-00-276-4215 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SM-B-334788?

Key specifications for SM-B-334788: Terminal Type and Quantity: 2 CONNECTOR, COAXIAL; Material: BRASS METER CASE; Special Features: COLOR CODE GREEN; Case Type: CYLINDRICAL. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-290-5821 still in active supply?

NSN 6685-00-290-5821 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.
PartsTable Design LLC · partstable.com