PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21412-1Thermometer,self-Indicating

Tycos Instruments Inc a Welch Allyn Co · NSN 6685-00-893-3565 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-893-3565 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-893-3565. Primary manufacturer part number: 21412-1.
Features
  • Thermometer,self-Indicating — FSC 6685
  • Scale Smallest Increment: 2.0 DEG FAHRENHEIT
  • Scale Inscription/background Color: BLACK MARKING ON WHITE BACKGROUND
  • Design Type: FLUCTUATING
  • Securing Device Type: RING
  • Scale Type: ETCHED STEM
  • 5 verified cross-references
  • 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 6685-00-893-3565, 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 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-893-3565
Primary Part Number21412-1
Item NameThermometer,self-Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerTycos Instruments Inc a Welch Allyn Co
StatusCANCELLED
Scale Smallest Increment2.0 DEG FAHRENHEIT
Scale Inscription/background ColorBLACK MARKING ON WHITE BACKGROUND
Design TypeFLUCTUATING
Securing Device TypeRING
Scale TypeETCHED STEM
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
3110-00-040-980802-1412-20 INTERCHANGEABLE
Bearing Matched Set
Scotsman Industries Inc Div Scotsman Ice Systems
4730-00-203-3129AN737TW44-48 INTERCHANGEABLE
Clamp,hose
Norma Pennsylvania Inc. Div Breeze Industrial Products
5306-00-206-1383200326 INTERCHANGEABLE
Bolt,internally Relieved Body
Chrysler Realty Company Llc Dba Daimler Chrysler
1040-00-300-423921412 INTERCHANGEABLE
Bus,bar
L3harris Technologies, Inc. Div Space and Airborne Systems
4720-00-541-7189 INTERCHANGEABLE
Hose,nonmetallic
5970-00-616-63382-141-2 INTERCHANGEABLE
Insulator Rotating
Precision Aerospace Corporation Dba Precision Engine Control
5330-00-627-7352 INTERCHANGEABLE
Packing,preformed
5940-00-836-060110-321-2 INTERCHANGEABLE
Terminal,feedthru
Concord Electronics, Inc.
5935-01-098-859821412 INTERCHANGEABLE
Connector,receptacle,electrical
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
5975-01-124-0353 INTERCHANGEABLE
Junction Box
Cross-Reference Index
Part NumberManufacturer
21412-1 Tycos Instruments Inc a Welch Allyn Co (USA)
PT006 Psg Controls, Inc. (USA)
21412 Tycos Instruments Inc a Welch Allyn Co (USA)
PT006 Sigma Products & Mfg (USA)
21412 Abb Kent-Taylor Inc (USA)
Related Parts
3110-00-040-9808INTERCHANGEABLE
BEARING MATCHED SET
02-1412-20
4730-00-203-3129INTERCHANGEABLE
CLAMP,HOSE
AN737TW44-48
5306-00-206-1383INTERCHANGEABLE
BOLT,INTERNALLY RELIEVED BODY
200326
1040-00-300-4239INTERCHANGEABLE
BUS,BAR
21412
4720-00-541-7189INTERCHANGEABLE
HOSE,NONMETALLIC
5970-00-616-6338INTERCHANGEABLE
INSULATOR ROTATING
2-141-2
5330-00-627-7352INTERCHANGEABLE
PACKING,PREFORMED
5940-00-836-0601INTERCHANGEABLE
TERMINAL,FEEDTHRU
10-321-2
5935-01-098-8598INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
21412
5975-01-124-0353INTERCHANGEABLE
JUNCTION BOX
6520-01-591-8283INTERCHANGEABLE
TIP,SYRINGE,AIR-WATER
5700104

Frequently Asked Questions

What is NSN 6685-00-893-3565?

NSN 6685-00-893-3565 is a Thermometer,self-Indicating, manufactured by Tycos Instruments Inc a Welch Allyn Co, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-893-3565?

NSN 6685-00-893-3565 has 5 cross-referenced part numbers: 21412-1 (Tycos Instruments Inc a Welch Allyn Co), PT006 (Psg Controls, Inc.), 21412 (Tycos Instruments Inc a Welch Allyn Co), PT006 (Sigma Products & Mfg), 21412 (Abb Kent-Taylor Inc).

What NSN replaces 6685-00-893-3565?

There are 11 known substitutes for 6685-00-893-3565: 3110-00-040-9808, 4730-00-203-3129, 5306-00-206-1383 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21412-1?

Key specifications for 21412-1: Scale Smallest Increment: 2.0 DEG FAHRENHEIT; Scale Inscription/background Color: BLACK MARKING ON WHITE BACKGROUND; Design Type: FLUCTUATING; Securing Device Type: RING. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-893-3565 still in active supply?

NSN 6685-00-893-3565 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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