PL644 — Technical Data Sheet

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C AND D BATTERIES AN ALLIED CO PLANT 1 · COMPONENT

WHAT YOU NEED TO KNOW

Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel

Confirm exact part number — similar PNs may be different parts

PRODUCT OVERVIEW

The THERMOMETER,SELF-INDICATING is a C AND D BATTERIES AN ALLIED CO PLANT 1 industrial component. Key specifications include SCALE TYPE: ETCHED STEM, DESIGN TYPE: FLUCTUATING, OVERALL LENGTH: 10.120 INCHES NOMINAL IN, SCALE SMALLEST INCREMENT: 1.0 DEG FAHRENHEIT, SCALE INSCRIPTION/BACKGROUND COLOR: BLACK MARKING ON WHITE BACKGROUND. This part is cataloged in the Federal Logistics Information System under NSN 6685-00-803-6421, 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

PL644

NSN: 6685-00-803-6421
FSC: 6685
CAGE: 80531 — C AND D BATTERIES AN ALLIED CO PLANT 1 (USA)

SPECIFICATIONS

SCALE TYPE	ETCHED STEM
DESIGN TYPE	FLUCTUATING
OVERALL LENGTH	10.120 INCHES NOMINAL IN
SCALE SMALLEST INCREMENT	1.0 DEG FAHRENHEIT
SCALE INSCRIPTION/BACKGROUND COLOR	BLACK MARKING ON WHITE BACKGROUND
NSN	6685-00-803-6421

COMPONENT DIAGRAM

KEY FEATURES

•

SCALE INSCRIPTION/BACKGROUND COLOR: BLACK MARKING ON WHITE BACKGROUND

•

DESIGN TYPE: FLUCTUATING

•

SCALE SMALLEST INCREMENT: 1.0 DEG FAHRENHEIT

•

SCALE TYPE: ETCHED STEM

TECHNICAL CHARACTERISTICS

SCALE INSCRIPTION/BACKGROUND COLOR	BLACK MARKING ON WHITE BACKGROUND
OVERALL LENGTH	10.120 INCHES NOMINAL IN
DESIGN TYPE	FLUCTUATING
SCALE SMALLEST INCREMENT	1.0 DEG FAHRENHEIT
SCALE TYPE	ETCHED STEM

VERIFIED SUBSTITUTES & CROSS-REFERENCES 6

601452InterchangeableGOVERNMENT REGISTRY

interchangeable cross-reference

interchangeable

22171InterchangeableGOVERNMENT REGISTRY

interchangeable cross-reference

interchangeable

400279InterchangeableGOVERNMENT REGISTRY

interchangeable cross-reference

interchangeable

PL567InterchangeableGOVERNMENT REGISTRY

Same NIIN cross-reference

interchangeable

KS5499L1351InterchangeableGOVERNMENT REGISTRY

Same NIIN cross-reference

interchangeable

PL00644InterchangeableGOVERNMENT REGISTRY

Same NIIN cross-reference

interchangeable

LIFECYCLE

StatusCANCELLEDGOVERNMENT REGISTRY

Availability—

RoHS CompliantEAR99Not HAZMAT

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FREQUENTLY ASKED QUESTIONS

What is PL644?

PL644 is a THERMOMETER,SELF-INDICATING manufactured by C AND D BATTERIES AN ALLIED CO PLANT 1.

What parts can replace PL644?

There are 6 known substitutes for PL644: 601452, 22171, 400279 and 3 more. Substitute compatibility should be verified for your specific system.

Is PL644 still available?

PL644 is currently cancelled.

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PL644 — Technical Data Sheet

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