PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21854Thermometer,self-Indicating

Tycos Instruments Inc a Welch Allyn Co · NSN 6685-00-126-0368 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-126-0368 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-126-0368. Primary manufacturer part number: 21854.
Features
  • Thermometer,self-Indicating — FSC 6685
  • Design Type: FLUCTUATING
  • Scale Type: DIAL
  • Securing Device Type: RING
  • 1 verified cross-reference
  • Primary manufacturer: Tycos Instruments Inc a Welch Allyn Co
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Thermometer,self-Indicating, cataloged under National Stock Number 6685-00-126-0368, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Tycos Instruments Inc a Welch Allyn Co. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-00-126-0368
Primary Part Number21854
Item NameThermometer,self-Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerTycos Instruments Inc a Welch Allyn Co
StatusACTIVE
Design TypeFLUCTUATING
Scale TypeDIAL
Securing Device TypeRING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5935-00-130-17051006252-4 INTERCHANGEABLE
Guide,electrical Connector
Armel De Llc Dba Armel Electronics
4730-00-203-8035183-2-18 INTERCHANGEABLE
Fitting,lubrication
Almon Johnson Ltd
5950-00-347-525121854 INTERCHANGEABLE
Transformer
Freed Transformer Co
1680-00-628-2705695531-3 INTERCHANGEABLE
Support Bracket,adj
Lockheed Martin Corp
5965-00-844-977867B1854 INTERCHANGEABLE
Boom,microphone
Air Force Lifecycle Management Center Electronic Components (aflcmc/ezss)
5110-01-335-157710R INTERCHANGEABLE
File,hand
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-01-430-864189612 INTERCHANGEABLE
Brush,parts Cleaning
Pferd Milwaukee Brush Co Inc
5360-01-592-186121854 INTERCHANGEABLE
Spring,helical,compression
Mission Systems Orchard Park Inc
5945-01-658-72381409-1-X INTERCHANGEABLE
Relay,electromagnetic
Te Connectivity Corporation
Cross-Reference Index
Part NumberManufacturer
21854 Tycos Instruments Inc a Welch Allyn Co (USA)
Related Parts
5935-00-130-1705INTERCHANGEABLE
GUIDE,ELECTRICAL CONNECTOR
1006252-4
4730-00-203-8035INTERCHANGEABLE
FITTING,LUBRICATION
183-2-18
5950-00-347-5251INTERCHANGEABLE
TRANSFORMER
21854
1680-00-628-2705INTERCHANGEABLE
SUPPORT BRACKET,ADJ
695531-3
5965-00-844-9778INTERCHANGEABLE
BOOM,MICROPHONE
67B1854
5110-01-335-1577INTERCHANGEABLE
FILE,HAND
10R
5120-01-430-8641INTERCHANGEABLE
BRUSH,PARTS CLEANING
89612
5360-01-592-1861INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
21854
5945-01-658-7238INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
1409-1-X

Frequently Asked Questions

What is NSN 6685-00-126-0368?

NSN 6685-00-126-0368 is a Thermometer,self-Indicating, manufactured by Tycos Instruments Inc a Welch Allyn Co, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-00-126-0368?

NSN 6685-00-126-0368 has 1 cross-referenced part number: 21854 (Tycos Instruments Inc a Welch Allyn Co).

What NSN replaces 6685-00-126-0368?

There are 9 known substitutes for 6685-00-126-0368: 5935-00-130-1705, 4730-00-203-8035, 5950-00-347-5251 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21854?

Key specifications for 21854: Design Type: FLUCTUATING; Scale Type: DIAL; Securing Device Type: RING. 3 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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