PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5640-01Thermometer,self-Indicating

Ametek, Inc. Div Aerospace & Defense · NSN 6685-00-843-7055 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-843-7055 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-843-7055. Primary manufacturer part number: 5640-01.
Features
  • Thermometer,self-Indicating — FSC 6685
  • Design Type: FLUCTUATINGFLUCTUATING
  • Scale Accuracy Rating: 1 PCT MIDDLE HALF OF SCALE,REMAINDER 2 PCT1 PCT MIDDLE HALF OF SCALE,REMAINDER 2 PCT
  • Scale Smallest Increment: 2.0 DEG FAHRENHEIT2.0 DEG FAHRENHEIT
  • Stem Length: 2.000 INCHES NOMINAL2.000 INCHES NOMINAL IN
  • Material: STEEL METER CASE
  • Actuating Medium: ALCOHOLALCOHOL
  • FSC Application Data: THERMOMETER,SELF-INDICATING,LIQUID IN GLASS,EXCEPT METEOROLOGICAL
Applications
  • Applications requiring Steel Meter Case construction
General Description

The Thermometer,self-Indicating, cataloged under National Stock Number 6685-00-843-7055, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Ametek, Inc. Div Aerospace & Defense. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-843-7055
Primary Part Number5640-01
Item NameThermometer,self-Indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAmetek, Inc. Div Aerospace & Defense
StatusCANCELLED
Design TypeFLUCTUATINGFLUCTUATING
Scale Accuracy Rating1 PCT MIDDLE HALF OF SCALE,REMAINDER 2 PCT1 PCT MIDDLE HALF OF SCALE,REMAINDER 2 PCT
Scale Smallest Increment2.0 DEG FAHRENHEIT2.0 DEG FAHRENHEIT
Stem Length2.000 INCHES NOMINAL2.000 INCHES NOMINAL IN
MaterialSTEEL METER CASE
Actuating MediumALCOHOLALCOHOL
FSC Application DataTHERMOMETER,SELF-INDICATING,LIQUID IN GLASS,EXCEPT METEOROLOGICAL
Scale TypeETCHED STEMETCHED STEM
Scale Inscription/background ColorBLACK MARKING ON WHITE BACKGROUNDBLACK MARKING ON WHITE BACKGROUND
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
6635-00-217-7053 INTERCHANGEABLE
Movement Assembly
5330-00-285-51188672320 INTERCHANGEABLE
Felt,mechanical,preformed
U S Army Tank Automotive Command Amsta-Im-Mm
7810-00-516-0152T1071 INTERCHANGEABLE
Ball,tennis
Wilson Sporting Goods Co.
6685-00-526-9428 INTERCHANGEABLE
Thermometer,self-Indicating
5950-01-007-93112534905 INTERCHANGEABLE
Transformer,pulse
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
Cross-Reference Index
Part NumberManufacturer
T571 Ametek, Inc. Div Aerospace & Defense (USA)
571 Ametek, Inc. Div Aerospace & Defense (USA)
5640-01 PRIMARY Ametek, Inc. Div Aerospace & Defense (USA)
A22613 Superior Air Products Co (USA)
T571-5640-01 Ametek, Inc. Div Aerospace & Defense (USA)
T-1071 Ametek, Inc. Div Aerospace & Defense (USA)
Related Parts
6635-00-217-7053INTERCHANGEABLE
MOVEMENT ASSEMBLY
5330-00-285-5118INTERCHANGEABLE
FELT,MECHANICAL,PREFORMED
8672320
7810-00-516-0152INTERCHANGEABLE
BALL,TENNIS
T1071
6685-00-526-9428INTERCHANGEABLE
THERMOMETER,SELF-INDICATING
5950-01-007-9311INTERCHANGEABLE
TRANSFORMER,PULSE
2534905

Frequently Asked Questions

What is NSN 6685-00-843-7055?

NSN 6685-00-843-7055 is a Thermometer,self-Indicating, manufactured by Ametek, Inc. Div Aerospace & Defense, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-843-7055?

NSN 6685-00-843-7055 has 6 cross-referenced part numbers: T571 (Ametek, Inc. Div Aerospace & Defense), 571 (Ametek, Inc. Div Aerospace & Defense), 5640-01 (Ametek, Inc. Div Aerospace & Defense), A22613 (Superior Air Products Co), T571-5640-01 (Ametek, Inc. Div Aerospace & Defense) and 1 more.

What NSN replaces 6685-00-843-7055?

There are 5 known substitutes for 6685-00-843-7055: 6635-00-217-7053, 5330-00-285-5118, 7810-00-516-0152 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5640-01?

Key specifications for 5640-01: Overall Length: 5.000 INCHES NOMINAL5.000 INCHES NOMINAL IN; Design Type: FLUCTUATINGFLUCTUATING; Scale Accuracy Rating: 1 PCT MIDDLE HALF OF SCALE,REMAINDER 2 PCT1 PCT MIDDLE HALF OF SCALE,REMAINDER 2 PCT; Scale Smallest Increment: 2.0 DEG FAHRENHEIT2.0 DEG FAHRENHEIT. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-843-7055 still in active supply?

NSN 6685-00-843-7055 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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