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3950K12 — Technical Data Sheet

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MCMASTER-CARR SUPPLY CO · COMPONENT
WHAT YOU NEED TO KNOW
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PRODUCT OVERVIEW

THERMOMETER,SELF-INDICATING,BIME. Key specifications include MATERIAL: STEEL CORROSION RESISTING METER CASE, SCALE TYPE: DIAL, DESIGN TYPE: FLUCTUATING, STEM LENGTH: 5.000 INCHES NOMINAL IN, DIAL DIAMETER: 1.000 INCHES NOMINAL IN, STYLE DESIGNATOR: STEM WELDED TO CASE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6685-01-222-9708, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
3950K12
NSN: 6685-01-222-9708
FSC: 6685
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
MATERIALSTEEL CORROSION RESISTING METER CASE
SCALE TYPEDIAL
DESIGN TYPEFLUCTUATING
STEM LENGTH5.000 INCHES NOMINAL IN
DIAL DIAMETER1.000 INCHES NOMINAL IN
STYLE DESIGNATORSTEM WELDED TO CASE
SCALE ACCURACY RATING1 PCT OF ENTIRE RANGE
SCALE MEASUREMENT RANGE+0.000 TO 220.000 DEG FAHRENHEIT
SCALE SMALLEST INCREMENT2.0 DEG FAHRENHEIT
NSN6685-01-222-9708
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: MCMASTER-CARR SUPPLY CO THERMOMETER,SELF-INDICATING,BIME TITLE COMPONENT PN 3950K12 MFR MCMASTER-CARR SUPPLY CO THERMOMETER,SELF-INDIC
KEY FEATURES
•
SCALE TYPE: DIAL
•
STEM LENGTH: 5.000 INCHES NOMINAL IN
•
MATERIAL: PLASTIC CASE HOLDER
•
SCALE SMALLEST INCREMENT: 2.0 DEG FAHRENHEIT
•
DESIGN TYPE: FLUCTUATING
•
DIAL DIAMETER: 1.000 INCHES NOMINAL IN
•
SCALE MEASUREMENT RANGE: +0.000 TO 220.000 DEG FAHRENHEIT
TECHNICAL CHARACTERISTICS (FLIS)
SCALE TYPEDIAL
STEM LENGTH5.000 INCHES NOMINAL IN
MATERIALPLASTIC CASE HOLDER
MATERIALSTEEL CORROSION RESISTING METER CASE
SCALE SMALLEST INCREMENT2.0 DEG FAHRENHEIT
DESIGN TYPEFLUCTUATING
DIAL DIAMETER1.000 INCHES NOMINAL IN
SCALE MEASUREMENT RANGE+0.000 TO 220.000 DEG FAHRENHEIT
STYLE DESIGNATORSTEM WELDED TO CASE
SCALE ACCURACY RATING1 PCT OF ENTIRE RANGE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
98-2024-5Interchangeable
interchangeable cross-reference
interchangeable
40392DPC5Interchangeable
interchangeable cross-reference
interchangeable
5-281300020Interchangeable
interchangeable cross-reference
interchangeable
60721Interchangeable
interchangeable cross-reference
interchangeable
BD220Interchangeable
interchangeable cross-reference
interchangeable
D4013-AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3950K12?
3950K12 is a THERMOMETER,SELF-INDICATING,BIME manufactured by MCMASTER-CARR SUPPLY CO.
What parts can replace 3950K12?
There are 14 known substitutes for 3950K12: 98-2024-5, 40392DPC5, 5-281300020 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3950K12?
3950K12 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6685-01-222-9708. This indicates validated use in U.S. government and defense supply chains.
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Last verified: September 2026