PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3S12AAFNXThermometer,self-Indicating,bime

Ashcroft Inc Dba Heise · NSN 6685-01-109-7035 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-109-7035 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-109-7035. Primary manufacturer part number: 3S12AAFNX.
Features
  • Thermometer,self-Indicating,bime — FSC 6685
  • Design Type: MAXIMUM AND MINIMUM
  • Dial Diameter: 3.000 INCHES NOMINAL IN
  • Scale Measurement Range: +25.000 TO 125.000 DEG FAHRENHEIT
  • Features Provided: PROTECTIVE GLASS/PLASTIC
  • Mounting Facility Type and Quantity: 1 THREADED PIPE CONNECTION
  • Stem Length: 12.000 INCHES NOMINAL IN
  • Style Designator: STRAIGHT FORM, HORIZONTAL DIAL
Applications
  • Applications requiring Aluminum Alloy Overall construction
General Description

The Thermometer,self-Indicating,bime, cataloged under National Stock Number 6685-01-109-7035, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Ashcroft Inc Dba Heise. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-01-109-7035
Primary Part Number3S12AAFNX
Item NameThermometer,self-Indicating,bime
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAshcroft Inc Dba Heise
StatusACTIVE
Design TypeMAXIMUM AND MINIMUM
Dial Diameter3.000 INCHES NOMINAL IN
Scale Measurement Range+25.000 TO 125.000 DEG FAHRENHEIT
Features ProvidedPROTECTIVE GLASS/PLASTIC
Mounting Facility Type and Quantity1 THREADED PIPE CONNECTION
Stem Length12.000 INCHES NOMINAL IN
Style DesignatorSTRAIGHT FORM, HORIZONTAL DIAL
MaterialALUMINUM ALLOY OVERALL
Scale Smallest Increment2.0 DEG FAHRENHEIT
Mounting Facility Screw Thread Series DesignatorNPT
Scale Inscription/background ColorBLACK MARKINGS ON SOLID ALUMINUM BACKGROUND
Mounting Thread Quantity14 PER INCH
Immersion Length4.000 INCHES NOMINAL IN
Scale Accuracy Rating1 PER CENT-TOTAL
Scale TypeDIAL
Mounting Facility Nominal Screw Thread Diameter0.500 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5961-00-007-7369 INTERCHANGEABLE
Semiconductor Device,diode
5905-00-252-6932JANR94EXCEPTF0RAEQ10B1AND10 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
Joint Electronics Type Designation System
3439-00-262-4286 INTERCHANGEABLE
Rod,welding
4320-00-398-9518J1 INTERCHANGEABLE
Shaft,transmission,pump
Circor Naval Solutions Llc Dba Warren Pumps
6625-00-544-5899 INTERCHANGEABLE
Meter,special Scale
4940-00-855-1666J1 INTERCHANGEABLE
Vibrator,fire Contr
Fmc Technologies Inc Div Material Handling Solutions
5961-01-027-69593SI2 INTERCHANGEABLE
Semiconductor Device,diode
Semtech Corporation
5330-01-177-9162 INTERCHANGEABLE
Parts Kit,seal Replacement,mecha
4820-01-232-8135J-1 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Leslie Controls, Inc. Dba Leslie Controls Inc
6695-01-570-0811J-1 INTERCHANGEABLE
Shocker,electric
Jorgensen Laboratories, Inc. Dba Jorgensen Laboratories Inc
Cross-Reference Index
Part NumberManufacturer
3S12AAFNX PRIMARY Ashcroft Inc Dba Heise (USA)
3S12 Weksler Glass Thermometer Corp (USA)
2503096 PRIMARY Evac North America Inc (USA)
2503096 Coltec Industries Inc. Dba Fairbanks Morse Engine Div Fairbanks Morse Engine (USA)
2503096 Envirovac Inc Dba Monogram Systems-Rockford Div (USA)
2502572 Envirovac Inc Dba Monogram Systems-Rockford Div (USA)
3BM12-07 Ashcroft Inc Dba Heise (USA)
J1 Marshall Instruments Inc (USA)
Related Parts
5961-00-007-7369INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5905-00-252-6932INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
JANR94EXCEPTF0RAEQ10B1AND10
3439-00-262-4286INTERCHANGEABLE
ROD,WELDING
4320-00-398-9518INTERCHANGEABLE
SHAFT,TRANSMISSION,PUMP
J1
6625-00-544-5899INTERCHANGEABLE
METER,SPECIAL SCALE
4940-00-855-1666INTERCHANGEABLE
VIBRATOR,FIRE CONTR
J1
5961-01-027-6959INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
3SI2
5330-01-177-9162INTERCHANGEABLE
PARTS KIT,SEAL REPLACEMENT,MECHA
4820-01-232-8135INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
J-1
6695-01-570-0811INTERCHANGEABLE
SHOCKER,ELECTRIC
J-1
6625-01-676-6032INTERCHANGEABLE
VOLTMETER
3S-1(2)

Frequently Asked Questions

What is NSN 6685-01-109-7035?

NSN 6685-01-109-7035 is a Thermometer,self-Indicating,bime, manufactured by Ashcroft Inc Dba Heise, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-109-7035?

NSN 6685-01-109-7035 has 8 cross-referenced part numbers: 3S12AAFNX (Ashcroft Inc Dba Heise), 3S12 (Weksler Glass Thermometer Corp), 2503096 (Evac North America Inc), 2503096 (Coltec Industries Inc. Dba Fairbanks Morse Engine Div Fairbanks Morse Engine), 2503096 (Envirovac Inc Dba Monogram Systems-Rockford Div) and 3 more.

What NSN replaces 6685-01-109-7035?

There are 11 known substitutes for 6685-01-109-7035: 5961-00-007-7369, 5905-00-252-6932, 3439-00-262-4286 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3S12AAFNX?

Key specifications for 3S12AAFNX: Design Type: MAXIMUM AND MINIMUM; Dial Diameter: 3.000 INCHES NOMINAL IN; Scale Measurement Range: +25.000 TO 125.000 DEG FAHRENHEIT; Features Provided: PROTECTIVE GLASS/PLASTIC. 18 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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