PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4750M-S4Thermometer,self-Indicating,bime

Moeller Instrument Company, Inc. Dba Moeller Instrument Co · NSN 6685-01-343-0639 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-343-0639 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-343-0639. Primary manufacturer part number: 4750M-S4.
Features
  • Thermometer,self-Indicating,bime — FSC 6685
  • Style Designator: STRAIGHT FORM, VERTICAL DIAL
  • Dial Diameter: 3.062 INCHES NOMINAL IN
  • Immersion Length: 2.000 INCHES NOMINAL IN
  • Stem Length: 2.000 INCHES NOMINAL IN
  • Scale Type: BROAD ARC DIAL
  • Design Type: FLUCTUATING
  • Material: PLASTIC DIAL FACE
Applications
  • Applications requiring Plastic Dial Face construction
General Description

The Thermometer,self-Indicating,bime, cataloged under National Stock Number 6685-01-343-0639, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Moeller Instrument Company, Inc. Dba Moeller Instrument Co. Government technical data includes 9 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-01-343-0639
Primary Part Number4750M-S4
Item NameThermometer,self-Indicating,bime
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerMoeller Instrument Company, Inc. Dba Moeller Instrument Co
StatusACTIVE
Style DesignatorSTRAIGHT FORM, VERTICAL DIAL
Dial Diameter3.062 INCHES NOMINAL IN
Immersion Length2.000 INCHES NOMINAL IN
Stem Length2.000 INCHES NOMINAL IN
Scale TypeBROAD ARC DIAL
Design TypeFLUCTUATING
MaterialPLASTIC DIAL FACE
Scale Measurement Range+50.000 TO 550.000 DEG FAHRENHEIT
MaterialSTEEL CORROSION RESISTING BEZEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
6685-00-368-9379 INTERCHANGEABLE
Thermometer,self-Indicating,bime
6685-00-449-7087 INTERCHANGEABLE
Thermometer,self-Indicating,bime
6685-00-782-52504250M-S2 50/550F INTERCHANGEABLE
Thermometer,self-Indicating,bime
Moeller Instrument Company, Inc. Dba Moeller Instrument Co
6685-01-201-8258 INTERCHANGEABLE
Thermometer,self-Indicating,bime
6685-01-263-6052 INTERCHANGEABLE
Thermometer,self-Indicating,bime
6685-01-267-5720 INTERCHANGEABLE
Thermometer,self-Indicating,bime
6685-01-376-2144B3L4L INTERCHANGEABLE
Thermometer,self-Indicating,bime
Weksler Glass Thermometer Corp
6685-01-376-2145B5A6Z INTERCHANGEABLE
Thermometer,self-Indicating,bime
Weksler Glass Thermometer Corp
Cross-Reference Index
Part NumberManufacturer
B3A2W Weksler Glass Thermometer Corp (USA)
B3A2WVM Naval Inventory Control Point Mechanicsburg (USA)
4750M-S4 PRIMARY Moeller Instrument Company, Inc. Dba Moeller Instrument Co (USA)
E35504 Ashcroft Inc Dba Heise (USA)
BM27-100A Weksler Glass Thermometer Corp (USA)
Related Parts
6685-00-368-9379INTERCHANGEABLE
THERMOMETER,SELF-INDICATING,BIME
6685-00-449-7087INTERCHANGEABLE
THERMOMETER,SELF-INDICATING,BIME
6685-00-782-5250INTERCHANGEABLE
THERMOMETER,SELF-INDICATING,BIME
4250M-S2 50/550F
6685-01-201-8258INTERCHANGEABLE
THERMOMETER,SELF-INDICATING,BIME
6685-01-263-6052INTERCHANGEABLE
THERMOMETER,SELF-INDICATING,BIME
6685-01-267-5720INTERCHANGEABLE
THERMOMETER,SELF-INDICATING,BIME
6685-01-376-2144INTERCHANGEABLE
THERMOMETER,SELF-INDICATING,BIME
B3L4L
6685-01-376-2145INTERCHANGEABLE
THERMOMETER,SELF-INDICATING,BIME
B5A6Z

Frequently Asked Questions

What is NSN 6685-01-343-0639?

NSN 6685-01-343-0639 is a Thermometer,self-Indicating,bime, manufactured by Moeller Instrument Company, Inc. Dba Moeller Instrument Co, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-343-0639?

NSN 6685-01-343-0639 has 5 cross-referenced part numbers: B3A2W (Weksler Glass Thermometer Corp), B3A2WVM (Naval Inventory Control Point Mechanicsburg), 4750M-S4 (Moeller Instrument Company, Inc. Dba Moeller Instrument Co), E35504 (Ashcroft Inc Dba Heise), BM27-100A (Weksler Glass Thermometer Corp).

What NSN replaces 6685-01-343-0639?

There are 8 known substitutes for 6685-01-343-0639: 6685-00-368-9379, 6685-00-449-7087, 6685-00-782-5250 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4750M-S4?

Key specifications for 4750M-S4: Style Designator: STRAIGHT FORM, VERTICAL DIAL; Dial Diameter: 3.062 INCHES NOMINAL IN; Immersion Length: 2.000 INCHES NOMINAL IN; Stem Length: 2.000 INCHES NOMINAL IN. 11 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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