PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

BD220Thermometer,self-Indicating,bime

Sigma Products & Mfg · NSN 6685-00-444-6500 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-444-6500 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-444-6500. Primary manufacturer part number: BD220.
Features
  • Thermometer,self-Indicating,bime — FSC 6685
  • Surface Treatment: PASSIVATE METER CASE
  • Scale Inscription/background Color: BLACK MARKING ON SILVER BACKGROUND
  • Design Type: FLUCTUATING
  • Scale Adjustment Variation: ADJUSTABLE OVER ENTIRE RANGE
  • Scale Measurement Range: +0.000 TO 220.000 DEG FAHRENHEIT
  • Stem Length: 5.000 INCHES NOMINAL IN
  • Material: STEEL CORROSION RESISTING METER CASE
Applications
  • Applications requiring Steel Corrosion Resisting Meter Case construction
General Description

The Thermometer,self-Indicating,bime, cataloged under National Stock Number 6685-00-444-6500, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Sigma Products & Mfg. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-444-6500
Primary Part NumberBD220
Item NameThermometer,self-Indicating,bime
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerSigma Products & Mfg
StatusCANCELLED
Surface TreatmentPASSIVATE METER CASE
Scale Inscription/background ColorBLACK MARKING ON SILVER BACKGROUND
Design TypeFLUCTUATING
Scale Adjustment VariationADJUSTABLE OVER ENTIRE RANGE
Scale Measurement Range+0.000 TO 220.000 DEG FAHRENHEIT
Stem Length5.000 INCHES NOMINAL IN
MaterialSTEEL CORROSION RESISTING METER CASE
Scale Smallest Increment2.0 DEG FAHRENHEIT
Features ProvidedPROTECTIVE GLASS/PLASTIC
Scale TypeCONCENTRIC DIAL
Scale Accuracy Rating1 DEG F DEGF
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
4730-00-235-4066 INTERCHANGEABLE
Elbow,tube
4710-00-423-062260721 INTERCHANGEABLE
Pipe
Jenny Products, Inc
5950-00-910-4933 INTERCHANGEABLE
Transformer,audio Frequency
3455-01-012-100550-10018 INTERCHANGEABLE
Reamer,machine
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
6685-01-222-97086072-1 INTERCHANGEABLE
Thermometer,self-Indicating,bime
Figgie International Inc Taylor Environmental Instruments Div
4820-01-320-818060B-721-01 INTERCHANGEABLE
Valve,globe
Aalberts Integrated Piping Systems Americas, Inc.
4130-01-533-183260721 INTERCHANGEABLE
Vacu Shroud,multi P
Dcm Clean Air Products, Inc.
Cross-Reference Index
Part NumberManufacturer
BD220 PRIMARY Sigma Products & Mfg (USA)
D4013-A Psg Controls, Inc. (USA)
K-79-3 PRIMARY Omega Engineering, Inc. (USA)
DIALTEMP Omega Engineering, Inc. (USA)
D4013-A Sigma Products & Mfg (USA)
BI-THERM Figgie International Inc Taylor Environmental Instruments Div (USA)
6685004446500 Kessler Thermometer Corp Dba Kessler Thermometers Corp (USA)
MAGNA-THERM Psg Controls, Inc. (USA)
6072-1 Figgie International Inc Taylor Environmental Instruments Div (USA)
ACCP220F Nar Medical Depot, Llc (USA)
Related Parts
4730-00-235-4066INTERCHANGEABLE
ELBOW,TUBE
4710-00-423-0622INTERCHANGEABLE
PIPE
60721
5950-00-910-4933INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
3455-01-012-1005INTERCHANGEABLE
REAMER,MACHINE
50-10018
6685-01-222-9708INTERCHANGEABLE
THERMOMETER,SELF-INDICATING,BIME
6072-1
4820-01-320-8180INTERCHANGEABLE
VALVE,GLOBE
60B-721-01
4130-01-533-1832INTERCHANGEABLE
VACU SHROUD,MULTI P
60721

Frequently Asked Questions

What is NSN 6685-00-444-6500?

NSN 6685-00-444-6500 is a Thermometer,self-Indicating,bime, manufactured by Sigma Products & Mfg, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-444-6500?

NSN 6685-00-444-6500 has 10 cross-referenced part numbers: BD220 (Sigma Products & Mfg), D4013-A (Psg Controls, Inc.), K-79-3 (Omega Engineering, Inc.), DIALTEMP (Omega Engineering, Inc.), D4013-A (Sigma Products & Mfg) and 5 more.

What NSN replaces 6685-00-444-6500?

There are 7 known substitutes for 6685-00-444-6500: 4730-00-235-4066, 4710-00-423-0622, 5950-00-910-4933 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of BD220?

Key specifications for BD220: Overall Length: 5.500 INCHES NOMINAL IN; Surface Treatment: PASSIVATE METER CASE; Scale Inscription/background Color: BLACK MARKING ON SILVER BACKGROUND; Design Type: FLUCTUATING. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-444-6500 still in active supply?

NSN 6685-00-444-6500 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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