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2A66 — Technical Data Sheet

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— · 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 HEATER is a the manufacturer industrial component. Key specifications include material: PLASTIC LENS, inscription: APUSH TO RESET INSERT, overall_width: 0.850 INCHES NOMINAL IN, overall_length: 1.080 INCHES NOMINAL IN, style_designator: FLAT, surface_condition: SMOOTH FACE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 4520-00-379-4631, 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
2A66
NSN: 4520-00-379-4631
FSC: 4520
CAGE: 24446 — GENERAL ELECTRIC COMPANY (USA)
SPECIFICATIONS
materialPLASTIC LENS
inscriptionAPUSH TO RESET INSERT
overall_width0.850 INCHES NOMINAL IN
overall_length1.080 INCHES NOMINAL IN
style_designatorFLAT
surface_conditionSMOOTH FACE
mounting_device_quantity1
light_transmission_designTRANSLUCENT LENS
NSN4520-00-379-4631
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available HEATER TITLE COMPONENT PN 2A66 MFR HEATER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
K1-3101-1001284AInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
569-4800-1189798InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
487-6204-802425RInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
G290507-98InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
723898-531InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
910169-01InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2A66?
2A66 is a HEATER.
What parts can replace 2A66?
There are 20 known substitutes for 2A66: K1-3101-1001284A, 569-4800-1189798, 487-6204-802425R and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2A66?
2A66 is cataloged in the Federal Logistics Information System under NSN 4520-00-379-4631. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026