PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

TG6402138Thermometer,indicating,capillary

General Motors Llc Dba General Motors · NSN 6685-00-922-7561 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-922-7561 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-922-7561. Primary manufacturer part number: TG6402138.
Features
  • Thermometer,indicating,capillary — FSC 6685
  • Bulb Tip Length: 1.670 INCHES NOMINAL IN
  • Active Portion Diameter: 0.417 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
  • Scale Inscription/background Color: WHITE MARKING ON BLACK BACKGROUND
  • Material: COPPER BULB
  • Material: STEEL METER CASE
  • Bulb Quantity: 1
  • Flexible Tube Length: 180.000 INCHES NOMINAL IN
Applications
  • Applications requiring Copper Bulb construction
General Description

The Thermometer,indicating,capillary, cataloged under National Stock Number 6685-00-922-7561, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is General Motors Llc Dba General Motors. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 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
NSN6685-00-922-7561
Primary Part NumberTG6402138
Item NameThermometer,indicating,capillary
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerGeneral Motors Llc Dba General Motors
StatusACTIVE
Bulb Tip Length1.670 INCHES NOMINAL IN
Active Portion Diameter0.417 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
Scale Inscription/background ColorWHITE MARKING ON BLACK BACKGROUND
MaterialCOPPER BULB
MaterialSTEEL METER CASE
Bulb Quantity1
Flexible Tube Length180.000 INCHES NOMINAL IN
Indicator Connection MethodFLEXIBLE TUBE
Bulb Connection TypeTHREADED
Bulb Overall Length2.300 INCHES NOMINAL IN
Pointer/pen Type and Quantity1 INDICATING SINGLE
Style DesignatorBULB W/O SOCKET
Active Portion Length1.670 INCHES NOMINAL IN
Case Diameter2.300 INCHES MINIMUM AND 2.330 INCHES MAXIMUM IN
Bulb TypeFLEXIBLE CAPILLARY
Actuating MediumMETHYL CHLORIDE
Dial Diameter1.938 INCHES NOMINAL IN
Scale Smallest Increment20.0 DEG FAHRENHEIT
Extension Neck Length0.630 INCHES NOMINAL IN
Bulb StylePLAIN BULB W/BENDABLE EXTENSION
Scale TypeCONCENTRIC DIAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4730-00-061-03928 SC 8 INTERCHANGEABLE
Nipple,tube
Parker-Hannifin Corporation Div Instrumentation Products Division
3120-00-847-6287 INTERCHANGEABLE
Bearing,sleeve
Cross-Reference Index
Part NumberManufacturer
TG6402138 General Motors Llc Dba General Motors (USA)
6402138 General Motors Llc Dba General Motors (USA)
6490363 General Motors Llc Dba General Motors (USA)
6490363 General Motors Llc Dba General Motors Llc (USA)
B8106 Pettibone Llc (USA)
13212E5901 Cecom Lr Center (USA)
Related Parts
4730-00-061-0392INTERCHANGEABLE
NIPPLE,TUBE
8 SC 8
3120-00-847-6287INTERCHANGEABLE
BEARING,SLEEVE

Frequently Asked Questions

What is NSN 6685-00-922-7561?

NSN 6685-00-922-7561 is a Thermometer,indicating,capillary, manufactured by General Motors Llc Dba General Motors, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-00-922-7561?

NSN 6685-00-922-7561 has 6 cross-referenced part numbers: TG6402138 (General Motors Llc Dba General Motors), 6402138 (General Motors Llc Dba General Motors), 6490363 (General Motors Llc Dba General Motors), 6490363 (General Motors Llc Dba General Motors Llc), B8106 (Pettibone Llc) and 1 more.

What NSN replaces 6685-00-922-7561?

There are 2 known substitutes for 6685-00-922-7561: 4730-00-061-0392, 3120-00-847-6287. Verify interchangeability with system specifications before substitution.

What are the specifications of TG6402138?

Key specifications for TG6402138: Bulb Tip Length: 1.670 INCHES NOMINAL IN; Active Portion Diameter: 0.417 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN; Scale Inscription/background Color: WHITE MARKING ON BLACK BACKGROUND; Material: COPPER BULB. 21 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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